Cog word meaning and definition

[noun] tooth on the rim of gear wheel
[verb] join pieces of wood with cogs
[verb] roll steel ingots

\Cog\, v. t. [imp. & p. p. {Cogged}; p. pr. & vb. n. {Cogging}.] [Cf. W. coegio to make void, to beceive, from coeg empty, vain, foolish. Cf. {Coax}, v. t.] 1. To seduce, or draw away, by adulation, artifice, or falsehood; to wheedle; to cozen; to cheat. [R.] I'll . . . cog their hearts from them. --Shak. 2. To obtrude or thrust in, by falsehood or deception; as, to cog in a word; to palm off. [R.] Fustian tragedies . . . have, by concerted applauses, been cogged upon the town for masterpieces. --J. Dennis To cog a die, to load so as to direct its fall; to cheat in playing dice. --Swift.
\Cog\, v. i. To deceive; to cheat; to play false; to lie; to wheedle; to cajole. For guineas in other men's breeches, Your gamesters will palm and will cog. --Swift.
\Cog\, n. A trick or deception; a falsehood. --Wm. Watson.
\Cog\, n. [Cf. Sw. kugge a cog, or W. cocos the cogs of a wheel.] 1. (Mech.) A tooth, cam, or catch for imparting or receiving motion, as on a gear wheel, or a lifter or wiper on a shaft; originally, a separate piece of wood set in a mortise in the face of a wheel. 2. (Carp.)
(a) A kind of tenon on the end of a joist, received into a notch in a bearing timber, and resting flush with its upper surface.
(b) A tenon in a scarf joint; a coak. --Knight. 3. (Mining.) One of the rough pillars of stone or coal left to support the roof of a mine.
\Cog\, v. t. To furnish with a cog or cogs. {Cogged breath sound} (Auscultation), a form of interrupted respiration, in which the interruptions are very even, three or four to each inspiration. --Quain.
\Cog\, n. [OE. cogge; cf. D. kog, Icel. kuggr Cf. {Cock} a boat.] A small fishing boat. --Ham. Nav. Encyc.

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