a. 1. So tight as to be impermeable to air or other gases; as, an air-tight cylinder; -- said of containers. [ 1913 Webster ]

2. of such close construction as to have little leakage of air in or out; -- said of structures [ WordNet 1.5 ]

3. so thoroughly convincing as to be insusceptible to doubt; having no apparent counterarguments; -- of arguments or assertions an airtight alibi an airtight argument
Syn. -- airtight, uncontradictable, undeniable. [ PJC ]

n. A stove the draft of which can be almost entirely shut off. [ Colloq. U. S. ] [ 1913 Webster ]

a. So tightly fitted as to preclude the escape of gas; impervious to gas. [ 1913 Webster ]

a. As tight as can be made by the hand; as, to tighten the nut hand-tight. Totten. [ 1913 Webster +PJC ]

a. Hoity-toity. [ 1913 Webster ]

n. A woman's fitted jacket. [ WordNet 1.5 ]

a. So tight as to exclude rain; as, a rain-tight roof. [ 1913 Webster ]

n. (Bot.) 1. any of several plants having seeds tipped with barbs that may cling to fur or clothing, especially those of the genus Bidens, also called bur marigold, beggar-ticks, and Beggar's ticks, which have prickly flattened achenes. RHUD [ 1913 Webster +PJC ]

2. a seed from a sticktight{ 1 }. [ PJC ]

obs. p. p. of Tie. Spenser. [ 1913 Webster ]

a. [ Compar. Tighter superl. Tightest. ] [ OE. tight, thiht; probably of Scand. origin; cf. Icel. þēttr, Dan. tæt, Sw. tät: akin to D. & G. dicht thick, tight, and perhaps to E. thee to thrive, or to thick. Cf. Taut. ] 1. Firmly held together; compact; not loose or open; as, tight cloth; a tight knot. [ 1913 Webster ]

2. Close, so as not to admit the passage of a liquid or other fluid; not leaky; as, a tight ship; a tight cask; a tight room; -- often used in this sense as the second member of a compound; as, water-tight; air-tight. [ 1913 Webster ]

3. Fitting close, or too close, to the body; as, a tight coat or other garment. [ 1913 Webster ]

4. Not ragged; whole; neat; tidy. [ 1913 Webster ]

Clad very plain, but clean and tight. Evelyn. [ 1913 Webster ]

I'll spin and card, and keep our children tight. Gay. [ 1913 Webster ]

5. Close; parsimonious; saving; as, a man tight in his dealings. [ Colloq. ] [ 1913 Webster ]

6. Not slack or loose; firmly stretched; taut; -- applied to a rope, chain, or the like, extended or stretched out. [ 1913 Webster ]

7. Handy; adroit; brisk. [ Obs. ] Shak. [ 1913 Webster ]

8. Somewhat intoxicated; tipsy. [ Slang ] [ 1913 Webster ]

9. (Com.) Pressing; stringent; not easy; firmly held; dear; -- said of money or the money market. Cf. Easy, 7. [ 1913 Webster ]

v. t. To tighten. [ Obs. ] [ 1913 Webster ]

v. t. [ imp. & p. p. Tightened p. pr. & vb. n. Tightening. ] To draw tighter; to straiten; to make more close in any manner. [ 1913 Webster ]

Just where I please, with tightened rein
I'll urge thee round the dusty plain. Fawkes. [ 1913 Webster ]

Tightening pulley (Mach.), a pulley which rests, or is forced, against a driving belt to tighten it. [ 1913 Webster ]

n. That which tightens; specifically (Mach.), a tightening pulley. [ 1913 Webster ]

n. A ribbon or string used to draw clothes closer. [ Obs. ] [ 1913 Webster ]

adv. In a tight manner; closely; nearly. [ 1913 Webster ]

n. The quality or condition of being tight. [ 1913 Webster ]

n. pl. Close-fitting garments, especially for the lower part of the body and the legs. [ 1913 Webster ]

v. t. [ 1st pref. un- + tighten. ] To make less tight or tense; to loosen. [ 1913 Webster ]

a. So tight as to retain, or not to admit, water; not leaky. [ 1913 Webster ]

a. So tight as to prevent the passing through of wind. Bp. Hall. [ 1913 Webster ]