Meaning of COG in English

COG

/ kɒg; NAmE kɑːg/ noun

1.

one of a series of teeth on the edge of a wheel that fit between the teeth on the next wheel and cause it to move

—picture at cogwheel

2.

= cogwheel

IDIOMS

- a cog in the machine / wheel

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WORD ORIGIN

Middle English : probably of Scandinavian origin and related to Swedish kugge and Norwegian kug .

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.