adv. On the bare back of a horse, without using a saddle; as, to ride bareback. [ 1913 Webster ]

a. Having the back uncovered; as, a barebacked horse. [ 1913 Webster ]

n. A very lean person; one whose bones show through the skin. Shak. [ 1913 Webster ]

{ } n. An instrument turning on a center, for boring holes. See Bit, n., 3. [ 1913 Webster ]

{ } n. (Naut.) A retractable or sliding keel used on sailboats, formed of a broad board or slab of wood or metal which may be raised into a water-tight case amidships, when in shallow water, or may be lowered to increase the area of lateral resistance and prevent drifting to leeward when the vessel is beating to windward. It is used in vessels of all sizes along the coast of the United States
Syn. -- centreboard, drop keel, sliding keel. [ 1913 Webster ]

n. same as centerboard.
Syn. -- centerboard, drop keel, sliding keel. [ WordNet 1.5 ]

n. The cerebellum. Derham. [ 1913 Webster ]

{ } a. (Anat.) of or pertaining to the cerebellum; as, the cerebellar artery. [ 1913 Webster ]

n.; pl. E. Cerebellums L. Cerebella /plu>. [ L., dim. of cerebrum brain. ] (Anat.) The large lobe of the hind brain in front of and above the medulla; the little brain. It controls combined muscular action. See Brain. [ 1913 Webster ]

a. [ L. cerebrum brain; akin to Gr. ka`ra head: cf. F. cérébral. See Cheer. ] (Anat.) Of or pertaining to the cerebrum. [ 1913 Webster ]

Cerebral apoplexy. See under Apoplexy. [ 1913 Webster ]

n. [ A false translation of the Skr. mūrdhanya, lit., head-sounds. ] One of a class of lingual consonants in the East Indian languages. See Lingual, n. [ 1913 Webster ]

☞ Prof. W. D. Whitney calls these letters linguals, and this is their usual designation in the United States. [ 1913 Webster ]

n. (Philos.) The doctrine or theory that psychical phenomena are functions or products of the brain only. [ 1913 Webster ]

n. One who accepts cerebralism. [ 1913 Webster ]

v. i. (Physiol.) To exhibit mental activity; to have the brain in action. [ 1913 Webster ]

n. Action of the brain, whether conscious or unconscious. [ 1913 Webster ]

a. Of, pertaining to, or derived from, the brain. [ 1913 Webster ]

Cerebric acid (Physiol. Chem.), a name formerly sometimes given to cerebrin. [ 1913 Webster ]

n. Brain power. [ R. ] [ 1913 Webster ]

a. [ Cerebrum + -form. ] Like the brain in form or substance. [ 1913 Webster ]

a. [ Cerebrum + L. fugere to flee. ] (Physiol.) Applied to those nerve fibers which go from the brain to the spinal cord, and so transfer cerebral impulses (centrifugal impressions) outwards. [ 1913 Webster ]

n. [ From Cerebrum. ] (Physiol. Chem.) A nonphosphorized, nitrogenous substance, obtained from brain and nerve tissue by extraction with boiling alcohol. It is uncertain whether it exists as such in nerve tissue, or is a product of the decomposition of some more complex substance. [ 1913 Webster ]

a. [ Cerebrum + L. petere to seek. ] (Physiol.) Applied to those nerve fibers which go from the spinal cord to the brain and so transfer sensations (centripetal impressions) from the exterior inwards. [ 1913 Webster ]

‖n. [ NL., fr. E. cerebrum + -itis. ] (Med.) Inflammation of the cerebrum. [ 1913 Webster ]

a. [ Cerebrum + -oid. ] Resembling, or analogous to, the cerebrum or brain. [ 1913 Webster ]

n. [ Cerebrum + -logy. ] The science which treats of the cerebrum or brain. [ 1913 Webster ]

n. [ Cerebrum + Gr. &unr_; suffering. ] (Med.) A hypochondriacal condition verging upon insanity, occurring in those whose brains have been unduly taxed; -- called also brain fag. [ 1913 Webster ]

n. [ Cerebrum + -scopy. ] (Med.) Examination of the brain for the diagnosis of disease; esp., the act or process of diagnosticating the condition of the brain by examination of the interior of the eye (as with an ophthalmoscope). Buck. [ 1913 Webster ]

n. [ From Cerebrum. ] (Physiol. Chem.) A sugarlike body obtained by the decomposition of the nitrogenous non-phosphorized principles of the brain. [ 1913 Webster ]

a. [ Cerebrum + spinal. ] (Anat.) Of or pertaining to the central nervous system consisting of the brain and spinal cord. [ 1913 Webster ]

Cerebro-spinal fluid (Physiol.), a serous fluid secreted by the membranes covering the brain and spinal cord. --
Cerebro-spinal meningitis,
Cerebro-spinal fever (Med.), a dangerous epidemic, and endemic, febrile disease, characterized by inflammation of the membranes of the brain and spinal cord, giving rise to severe headaches, tenderness of the back of the neck, paralysis of the ocular muscles, etc. It is sometimes marked by a cutaneous eruption, when it is often called spotted fever. It is not contagious. [ 1913 Webster ]

n.; pl. E. Cerebrums L. Cerebra [ L., the brain. ] (Anat.) The anterior, and in man the larger, division of the brain; the seat of the reasoning faculties and the will. See Brain. [ 1913 Webster ]

a. [ L. creber close + costa rib. ] (Zool.) Marked with closely set ribs or ridges. [ 1913 Webster ]

a. [ L. creber close + sulcus furrow. ] (Zool.) Marked with closely set transverse furrows. [ 1913 Webster ]

n. [ L. crebritudo, fr. creber close. ] Frequency. [ Obs. ] Bailey. [ 1913 Webster ]

a. [ L. creber close set, frequent. ] Frequent; numerous. [ Obs. ] Goodwin. [ 1913 Webster ]

n. a natural family of New World botflies.
Syn. -- family Cuterebridae. [ WordNet 1.5 ]

n. [ Pref. di- + terebene. ] (Chem.) See Colophene.

n. [ L., fr. Gr. &unr_;. ] 1. (Greek Myth.) A place of nether darkness, being the gloomy space through which the souls passed to Hades. See Milton's “Paradise Lost, ” Book II., line 883. [ 1913 Webster ]

2. (Greek Myth.) The son of Chaos and brother of Nox, who dwelt in Erebus. [ 1913 Webster ]

To the infernal deep, with Erebus and tortures vile. Shak. [ 1913 Webster ]

n. [ L. excerebratus deprived of brains; ex out + cerebrum brain. ] The act of removing or beating out the brains. [ 1913 Webster ]

a. [ See Excerebration. ] Brainless. [ R. ] [ 1913 Webster ]

n. Same as fiberboard. [ mostly British usage ] [ WordNet 1.5 ]

n. (Zool.) One of several species of pheasants of the genus Euplocamus, having the lower back a bright, fiery red. They inhabit Southern Asia and the East Indies. [ 1913 Webster ]

n. 1. (Mil.) A ball filled with powder or other combustibles, intended to be thrown among enemies, and to injure by explosion; also, to set fire to their works and light them up, so that movements may be seen. [ 1913 Webster ]

2. A rare phenomenon often associated with or caused by lightning, resembling a luminous ball of fire passing rapidly through the air or along solid objects, then disappearing, and sometimes exploding. It seldom lasts more than a few seconds. Also called ball lightning, globe lightning, globular lightning, or kugelblitz. [ Webster 1913 Suppl. +PJC ]

3. A large mass of fire caused by a large explosion, as of inflammable liquids or a nuclear device. The larger fireballs, as of nuclear explosions, rise seemingly intact into the air and may reach high altitudes while still glowing. [ PJC ]

n. A beacon. [ Obs. ] Burrill. [ 1913 Webster ]

n. (Zool.) The Baltimore oriole. [ 1913 Webster ]

n. A chimney board or screen to close a fireplace when not in use. [ 1913 Webster ]

n. (O. Eng. Law) An allowance of fuel. See Bote. [ 1913 Webster ]

n. 1. A piece of burning wood. L'Estrange. [ 1913 Webster ]

2. One who inflames factions, or causes contention and mischief; an incendiary. Bacon. [ 1913 Webster ]

n. (Zool.) an insect (Thermobia domestica) which is a type of bristletail that lives in warm moist areas e.g. around furnaces.
Syn. -- Thermobia domestica. [ WordNet 1.5 ]

n. a narrow field that has been cleared to check the spread of a prairie fire or forest fire. [ WordNet 1.5 ]

n. a brick made of fire clay, used for lining e.g. furnaces and chimneys. [ WordNet 1.5 ]

n. a criminal who illegaly sets fire to property; an arsonist.
Syn. -- arsonist, incendiary. [ WordNet 1.5 ]

2. a brightly colored type of true bug that can exude a stain. [ WordNet 1.5 ]