{ or }. (Med.) Same as Aden ulcer. [ Webster 1913 Suppl. + AS ]

{ }. [ Named after the town Biskara, in Algeria. ] (Med.) Same as Aleppo boil. [ Webster 1913 Suppl. ]

v. i. [ imp. & p. p. Boiled p. pr. & vb. n. Boiling. ] [ OE. boilen, OF. boilir, builir, F. bouillir, fr. L. bullire to be in a bubbling motion, from bulla bubble; akin to Gr. &unr_;, Lith. bumbuls. Cf. Bull an edict, Budge, v., and Ebullition. ] 1. To be agitated, or tumultuously moved, as a liquid by the generation and rising of bubbles of steam (or vapor), or of currents produced by heating it to the boiling point; to be in a state of ebullition; as, the water boils. [ 1913 Webster ]

2. To be agitated like boiling water, by any other cause than heat; to bubble; to effervesce; as, the boiling waves. [ 1913 Webster ]

He maketh the deep to boil like a pot. Job xii. 31. [ 1913 Webster ]

3. To pass from a liquid to an aëriform state or vapor when heated; as, the water boils away. [ 1913 Webster ]

4. To be moved or excited with passion; to be hot or fervid; as, his blood boils with anger. [ 1913 Webster ]

Then boiled my breast with flame and burning wrath. Surrey. [ 1913 Webster ]

5. To be in boiling water, as in cooking; as, the potatoes are boiling. [ 1913 Webster ]

To boil away, to vaporize; to evaporate or be evaporated by the action of heat. --
To boil over, to run over the top of a vessel, as liquid when thrown into violent agitation by heat or other cause of effervescence; to be excited with ardor or passion so as to lose self-control. [ 1913 Webster ]

v. t. 1. To heat to the boiling point, or so as to cause ebullition; as, to boil water. [ 1913 Webster ]

2. To form, or separate, by boiling or evaporation; as, to boil sugar or salt. [ 1913 Webster ]

3. To subject to the action of heat in a boiling liquid so as to produce some specific effect, as cooking, cleansing, etc.; as, to boil meat; to boil clothes. [ 1913 Webster ]

The stomach cook is for the hall,
And boileth meate for them all. Gower. [ 1913 Webster ]

4. To steep or soak in warm water. [ Obs. ] [ 1913 Webster ]

To try whether seeds be old or new, the sense can not inform; but if you boil them in water, the new seeds will sprout sooner. Bacon. [ 1913 Webster ]

To boil down, to reduce in bulk by boiling; as, to boil down sap or sirup. [ 1913 Webster ]

n. Act or state of boiling. [ Colloq. ] [ 1913 Webster ]

n. [ Influenced by boil, v. See Beal, Bile. ] A hard, painful, inflamed tumor, which, on suppuration, discharges pus, mixed with blood, and discloses a small fibrous mass of dead tissue, called the core. [ 1913 Webster ]

A blind boil, one that suppurates imperfectly, or fails to come to a head. --
Delhi boil (Med.), a peculiar affection of the skin, probably parasitic in origin, prevailing in India (as among the British troops) and especially at Delhi. [ 1913 Webster ]

n. See Boilery. [ 1913 Webster ]

a. Dressed or cooked by boiling; subjected to the action of a boiling liquid; as, boiled meat; a boiled dinner; boiled clothes. [ 1913 Webster ]

adj. expressing the essence; condensed; summarized. the final boiled-down crux of the matter
Syn. -- boiled down. [ WordNet 1.5 ]

n. 1. One who boils. [ 1913 Webster ]

2. A vessel in which any thing is boiled. [ 1913 Webster ]

☞ The word boiler is a generic term covering a great variety of kettles, saucepans, clothes boilers, evaporators, coppers, retorts, etc. [ 1913 Webster ]

3. (Mech.) A strong metallic vessel, usually of wrought iron plates riveted together, or a composite structure variously formed, in which steam is generated for driving engines, or for heating, cooking, or other purposes. [ 1913 Webster ]

☞ The earliest steam boilers were usually spheres or sections of spheres, heated wholly from the outside. Watt used the wagon boiler (shaped like the top of a covered wagon) which is still used with low pressures. Most of the boilers in present use may be classified as plain cylinder boilers, flue boilers, sectional and tubular boilers. [ 1913 Webster ]

Barrel of a boiler, the cylindrical part containing the flues. --
Boiler plate,
Boiler iron, plate or rolled iron of about a quarter to a half inch in thickness, used for making boilers and tanks, for covering ships, etc. --
Cylinder boiler, one which consists of a single iron cylinder. --
Flue boilers are usually single shells containing a small number of large flues, through which the heat either passes from the fire or returns to the chimney, and sometimes containing a fire box inclosed by water. --
Locomotive boiler, a boiler which contains an inclosed fire box and a large number of small flues leading to the chimney. --
Multiflue boiler. Same as Tubular boiler, below. --
Sectional boiler, a boiler composed of a number of sections, which are usually of small capacity and similar to, and connected with, each other. By multiplication of the sections a boiler of any desired capacity can be built up. --
Tubular boiler, a boiler containing tubes which form flues, and are surrounded by the water contained in the boiler. See Illust. of Steam boiler, under Steam. --
Tubulous boiler. See under Tubulous. See Tube, n., 6, and 1st Flue. [ 1913 Webster ]

n. A sunken reef; esp., a coral reef on which the sea breaks heavily. [ Webster 1913 Suppl. ]

n. a loose protective smock worn over ordinary clothing for dirty work. [ British ]
Syn. -- overall, boilers suit. [ WordNet 1.5 ]

n. [ Cf. F. bouillerie. ] A place and apparatus for boiling, as for evaporating brine in salt making. [ 1913 Webster ]

a. Heated to the point of bubbling; heaving with bubbles; in tumultuous agitation, as boiling liquid; surging; seething; swelling with heat, ardor, or passion. [ 1913 Webster ]

Boiling point, the temperature at which a fluid is converted into vapor, with the phenomena of ebullition. This is different for different liquids, and for the same liquid under different pressures. For water, at the level of the sea, barometer 30 in., it is 212 ° Fahrenheit; for alcohol, 172.96°; for ether, 94.8°; for mercury, about 675°. The boiling point of water is lowered one degree Fahrenheit for about 550 feet of ascent above the level of the sea. --
Boiling spring, a spring which gives out very hot water, or water and steam, often ejecting it with much force; a geyser. --
To be at the boiling point, to be very angry. --
To keep the pot boiling, to keep going on actively, as in certain games. [ Colloq. ] [ 1913 Webster ]

n. 1. The act of ebullition or of tumultuous agitation. [ 1913 Webster ]

2. Exposure to the action of a hot liquid. [ 1913 Webster ]

adv. With boiling or ebullition. [ 1913 Webster ]

And lakes of bitumen rise boiling higher. Byron. [ 1913 Webster ]

v. i. To boil with anger; to effervesce. [ Obs. ] Spenser. [ 1913 Webster ]

v. t. To cause to boil with anger; to irritate; to chafe. [ Obs. ] Spenser. [ 1913 Webster ]

v. t. [ Pref. en- + garboil. ] To throw into disorder; to disturb. [ Obs. ] “To engarboil the church.” Bp. Montagu. [ 1913 Webster ]

. A variety of water-tube boiler, used chiefly in steam automobiles, consisting of a nest of strong tubes with very little water space, kept nearly red hot so that the water as it trickles drop by drop into the tubes is immediately flashed into steam and superheated. [ Webster 1913 Suppl. ]

n. [ OF. garbouil; cf. Sp. garbullo, It. garbuglio; of uncertain origin; the last part is perh. fr. L. bullire to boil, E. boil. ] Tumult; disturbance; disorder. [ Obs. ] Shak. [ 1913 Webster ]

n. (Med.) A small suppurating inflamed spot on the gum. [ 1913 Webster ]

adj. not given to sentimentality or gentleness; -- of people; as, a hard-bitten character.
Syn. -- pugnacious, tough. [ WordNet 1.5 +PJC ]

adj. 1. same as hard-bitten.
Syn. -- hard-bitten, pugnacious. [ WordNet 1.5 ]

2. emotionally hardened; -- used of persons.
Syn. -- callous, case-hardened, hardened. [ WordNet 1.5 ]

3. cooked until the yolk is solid; -- used of eggs; as, a breakfast of pancakes and hard-boiled eggs. [ WordNet 1.5 ]

v. t. & i. [ Obs. ] See Emboil. [ 1913 Webster ]

pos>n. A steam boiler having two flues which contain the furnaces and extend through the boiler from end to end. [ 1913 Webster ]

(Med.) same as Aleppo boil. [ Webster 1913 Suppl. ]

v. i. To boil over or unduly. [ 1913 Webster ]

Nor is discontent to keep the mind
Deep in its fountain, lest it overboil
In the hot throng. Byron. [ 1913 Webster ]

v. t. [ imp. & p. p. Parboiled p. pr. & vb. n. Parboiling. ] [ OE. parboilen, OF. parbouillir to cook well; par through (see Par) + bouillir to boil, L. bullire. The sense has been influenced by E. part. See 1st Boil. ] 1. To boil or cook thoroughly. [ Obs. ] B. Jonson. [ 1913 Webster ]

2. To boil in part; to cook partially by boiling. [ 1913 Webster ]

3. Hence: (Fig.) To do (something) only part way, or incompletely. Also used intransitively. [ PJC ]

n. A term applied derisively to any literary or artistic work, and esp. a painting, done simply for money and the means of living. [ Cant ] [ 1913 Webster ]

n. [ OE. cuir bouilli. ] Leather softened by boiling so as to take any required shape. Upon drying, it becomes exceedingly hard, and hence was formerly used for armor. [ Obs. ] “His jambeux were of quyrboilly.” Chaucer. [ 1913 Webster ]

v. t. & i. [ Pref. re- + boil: cf. F. rebouillir. ] 1. To boil, or to cause to boil, again. [ 1913 Webster ]

2. Fig.: To make or to become hot. [ Obs. ] [ 1913 Webster ]

Some of his companions thereat reboyleth. Sir T. Elyot. [ 1913 Webster ]