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cog1

[kog, kawg] /kɒg, kɔg/
noun
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.
3.
a person who plays a minor part in a large organization, activity, etc.:
He's just a small cog in the financial department.
verb (used without object), cogged, cogging.
4.
(of an electric motor) to move jerkily.
verb (used with object), cogged, cogging.
5.
to roll or hammer (an ingot) into a bloom or slab.
Idioms
6.
slip a cog, to make a blunder; err:
One of the clerks must have slipped a cog.
Origin of cog1
1200-1250
1200-50; Middle English cogge, probably < Scandinavian; compare Swedish, Norwegian kugg cog

cog2

[kog, kawg] /kɒg, kɔg/
verb (used with object), cogged, cogging.
1.
to manipulate or load (dice) unfairly.
verb (used without object), cogged, cogging.
2.
to cheat, especially at dice.
Origin
1525-35; origin uncertain

cog3

[kog, kawg] /kɒg, kɔg/
noun
1.
Carpentry. (in a cogged joint) the tongue in one timber, fitting into a corresponding slot in another.
2.
Mining. a cluster of timber supports for a roof.
Compare chock (def 4).
verb (used with object), verb (used without object), cogged, cogging.
3.
Carpentry. to join with a cog.
Origin
1855-60; special use of cog1; replacing cock in same sense, special use of cock1 (in sense of projection); see coak

cog.

1.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for cog
Contemporary Examples
Historical Examples
  • I thought how each German felt he was a cog in the immense national machine, and had his work systematised.

    The Sequel George A. Taylor
  • From the upper piece a notch is cut only wide enough to receive the cog.

    Handwork in Wood William Noyes
  • For if he were now solving decimals and square root he would be but a cog and not the great wheel itself.

    The Reconstructed School Francis B. Pearson
  • The Emperor Napoleon has visited some of his hospitals in cog.

  • In short, he is becoming a specialist which makes him a cog in the machine of quantity output.

    The War After the War Isaac Frederick Marcosson
  • The young gintlemen are two princes that are travelling in cog.

    Klondike Nuggets E. S. Ellis
  • I hae had better kail in my cog, and ne'er gae them a keytch.

    The Proverbs of Scotland Alexander Hislop
  • It proved that not only the seams had to be calked but that the cog Thomas was out of fresh water.

    Sir Nigel Arthur Conan Doyle
  • At once there was a cog gone from the answering wheel to match.

British Dictionary definitions for cog

cog1

/kɒɡ/
noun
1.
any of the teeth or projections on the rim of a gearwheel or sprocket
2.
a gearwheel, esp a small one
3.
a person or thing playing a small part in a large organization or process
verb cogs, cogging, cogged
4.
(transitive) (metallurgy) to roll (cast-steel ingots) to convert them into blooms
Word Origin
C13: of Scandinavian origin; compare Danish kogge, Swedish kugge, Norwegian kug

cog2

/kɒɡ/
verb cogs, cogging, cogged
1.
(slang) to cheat (in a game, esp dice), as by loading a dice
Word Origin
C16: originally a dice-playing term, of unknown origin

cog3

/kɒɡ/
noun
1.
a tenon that projects from the end of a timber beam for fitting into a mortise
verb cogs, cogging, cogged
2.
(transitive) to join (pieces of wood) with cogs
Word Origin
C19: of uncertain origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for cog
n.

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."

Online Etymology Dictionary, © 2010 Douglas Harper
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Related Abbreviations for cog

cog.

cognate
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Idioms and Phrases with cog

cog

In addition to the idiom beginning with cog also see: slip a cog
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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6
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