Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary
1

cog

play
noun \ˈkäg\

Definition of cog

  1. 1 :  a tooth on the rim of a wheel or gear

  2. 2 :  a subordinate but integral person or part

cogged

play \ˈkägd\ adjective


Origin and Etymology of cog

Middle English cogge, of Scandinavian origin; akin to Swedish kugge cog


First Known Use: 13th century

Other Mechanical Engineering Terms


2

cog

verb

Definition of cog

cogged

cogging

  1. intransitive verb
  2. 1 obsolete :  to cheat in throwing dice

  3. 2 obsolete :  deceive

  4. 3 obsolete :  to use venal flattery

  5. transitive verb
  6. 1 :  to direct the fall of (dice) fraudulently

  7. 2 obsolete :  wheedle



Origin and Etymology of cog

obsolete cog a trick


First Known Use: 1532


3

cog

verb

Definition of cog

cogged

cogging

  1. transitive verb
  2. :  to connect (as timbers or joists) by means of mortises and tenons



Origin and Etymology of cog

probably alteration of cock to cog


First Known Use: 1823

Other Building Terms


4

cog

noun

Definition of cog

  1. :  a tenon on a beam or timber



1830

First Known Use of cog

1830

Other Building Terms


5

cog

abbreviation

Definition of cog

  1. cognate



Other Language Terms

Rhymes with cog


COG Defined for Kids

cog

play
noun \ˈkäg\

Definition of cog for Students

  1. :  a tooth on the rim of a wheel or gear




Learn More about cog


Seen and Heard

What made you want to look up cog? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to proceed clumsily or ineffectually

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

lavender-fields-in-france

Which of these is a synonym of caesura?

megillah interruption rebellion torrent
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ