• (RP) enPR: kŏg, IPA: /kɒɡ/
• (America) enPR kŏg, IPA: /kɑɡ/, /kɔɡ/

cog (plural cogs)

1. A tooth on a gear.
2. A gear; a cogwheel.
3. An unimportant individual in a greater system.
   • 1976, Norman Denny (English translation), Victor Hugo (original French), Les Misérables

     ‘There are twenty-five of us, but they don’t reckon I’m worth anything. I’m just a cog in the machine.’

   • 1988, David Mamet, Speed-the-Plow

     Your boss tells you “take initiative,” you best guess right—and you do, then you get no credit. Day-in, … smiling, smiling, just a cog.

4. (carpentry) A projection or tenon at the end of a beam designed to fit into a matching opening of another piece of wood to form a joint.
5. (mining) One of the rough pillars of stone or coal left to support the roof of a mine.

• French: dent
• German: Zahn
• Portuguese: dente
• Russian: зубе́ц
• Spanish: diente

• French: engrenage
• German: Zahnrad
• Italian: ingranaggio
• Portuguese: engrenagem
• Russian: зу́бчатое колесо́

• French: pion
• German: Rädchen
• Italian: rotellina
• Russian: ви́нтик

• German: Zapfen

cog (cogs, present participle cogging; past and past participle cogged)

1. To furnish with a cog or cogs.

cog (plural cogs)

1. (historical) A ship of burden, or war with a round, bulky hull.

• German: Kogge
• Russian: когг
• Spanish: coca

cog (plural cogs)

1. A trick or deception; a falsehood.

cog (cogs, present participle cogging; past and past participle cogged)

1. To load (a die) so that it can be used to cheat.
2. To cheat; to play or gamble fraudulently.
   • 1726, Jonathan Swift (debated), Molly Mog

     For guineas in other men's breeches, / Your gamesters will palm and will cog.

3. To seduce, or draw away, by adulation, artifice, or falsehood; to wheedle; to cozen; to cheat.
   • c. 1608–1609, William Shakespeare, “The Tragedy of Coriolanus”, in Mr. William Shakespeares Comedies, Histories, & Tragedies: Published According to the True Originall Copies (First Folio), London: Printed by Isaac Iaggard, and Ed[ward] Blount, published 1623, OCLC 606515358 ↗, [Act III, scene ii]:

     I'll mountebank their loves,
     Cog their hearts from them.

4. To obtrude or thrust in, by falsehood or deception; to palm off.

   to cog in a word

   • Fustian tragedies […] have, by concerted applauses, been cogged upon the town for masterpieces.

cog (plural cogs)

1. A small fishing boat.
2. Alternative form of cogue#English|cogue (“wooden vessel for milk”)

cog (plural cogs)

1. Initialism of center of gravity#English|center of gravity.

1. Initialism of Church of God: numerous, mostly unrelated Christian denominations.