- (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.
- a cogwheel.
- a person who plays a minor part in a large organization, activity, etc.: He's just a small cog in the financial department.
- (of an electric motor) to move jerkily.
- to roll or hammer (an ingot) into a bloom or slab.
- slip a cog, to make a blunder; err: One of the clerks must have slipped a cog.
Origin of cog1
- to manipulate or load (dice) unfairly.
- to cheat, especially at dice.
Origin of cog2
- Carpentry. (in a cogged joint) the tongue in one timber, fitting into a corresponding slot in another.
- Mining. a cluster of timber supports for a roof.Compare chock(def 4).
- Carpentry. to join with a cog.
Origin of cog3
Examples from the Web for cog
You might be a cog at a trading desk, compensated with nothing but money.Let Them Say F--k
August 1, 2010
It is feeling the whole of the ship that makes being a Cog worth while.The Ghost in the White House
Gerald Stanley Lee
Dr. Entman shook his head sadly, certain that Taber had slipped a cog.Ten From Infinity
Paul W. Fairman
From the upper piece a notch is cut only wide enough to receive the cog.Handwork in Wood
The Emperor Napoleon has visited some of his hospitals in cog.A Journal of a Young Man of Massachusetts, 2nd ed.
I hae had better kail in my cog, and ne'er gae them a keytch.The Proverbs of Scotland
- any of the teeth or projections on the rim of a gearwheel or sprocket
- a gearwheel, esp a small one
- a person or thing playing a small part in a large organization or process
- (tr) metallurgy to roll (cast-steel ingots) to convert them into blooms
- slang to cheat (in a game, esp dice), as by loading a dice
- a tenon that projects from the end of a timber beam for fitting into a mortise
- (tr) to join (pieces of wood) with cogs
Word Origin and History for cog
c.1300, "cog wheel;" late 14c., "tooth on a wheel," probably a borrowing from a Scandinavian language (cf. Norwegian kugg "cog") and cognate with Middle High German kugel "ball."