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Definitions for Cog

[1] (not in technical use) a gear tooth, formerly especially one of hardwood or metal, fitted into a slot in a gearwheel of less durable material.
[2] a cogwheel.
[3] a person who plays a minor part in a large organization, activity, etc.: He's just a small cog in the financial department.
[4] (of an electric motor) to move jerkily.
[5] to roll or hammer (an ingot) into a bloom or slab.
[6] slip a cog , to make a blunder; err: One of the clerks must have slipped a cog.
[7] to manipulate or load (dice) unfairly.
[8] to cheat, especially at dice.
[9] Carpentry . (in a cogged joint) the tongue in one timber, fitting into a corresponding slot in another.
[10] Mining . a cluster of timber supports for a roof. Compare chock(def 4) .
[11] Carpentry . to join with a cog.
[12] cognate.
[13] any of the teeth or projections on the rim of a gearwheel or sprocket
[14] a gearwheel, esp a small one
[15] a person or thing playing a small part in a large organization or process
[16] (tr) metallurgy to roll (cast-steel ingots) to convert them into blooms
[17] slang to cheat (in a game, esp dice), as by loading a dice
[18] a tenon that projects from the end of a timber beam for fitting into a mortise
[19] (tr) to join (pieces of wood) with cogs

Words related to Cog

prong, wheel, gear, transmission, tooth, tine, tusk, rack, fang, cogwheel, differential, ratchet, pinion

Words nearby Cog

coffle, cofinal, cofound, cofounder, cofunction, cog, cog in the wheel, cog railway, cog., cogan-reese syndrome, cogency

Origin of Cog

31855–60; special use of cog1; replacing cock in same sense, special use of cock1 (in sense of projection); see coak

Word origin for Cog

C19: of uncertain origin

Synonyms for Cog

prong, cogwheel, differential, fang, gear, pinion, rack, ratchet, tine, tooth, transmission, tusk, wheel