Cogwheel

noun

Definitions

Noun
  1. 1
    A gear wheel.

    "Near-synonyms: cog, gear (often synonymous)"

  2. 2
    a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion wordnet
  3. 3
    Something behaving in a jerky manner similar to a cogwheel, e.g. cogwheel respiration as a side effect of hyperbaric medicine. attributive

Etymology

From cog + wheel.

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