cogwheel

/ˈkɒɡwiːl/ (bre, ipa) · /ˈkɑːɡwiːl/ (ame, ipa) · /ˈkäg-ˌ(h)wēl/ (ame, mw)

cogwheel — noun

  • cogwheelsingular
  • cogwheelsplural

1. a machine wheel with teeth on its edge that lock into another toothed wheel and

1.名詞B2
釋義

a machine wheel with teeth on its edge that lock into another toothed wheel and make it turn.

例句

Noor watched the brass cogwheel turn each time the clock struck noon.

collocation: cogwheel turn inside a clock

Élise cleaned the tiny cogwheel before putting the toy robot back together.

pattern: clean a small machine part

同義詞
  • gear

    the broader everyday term for a toothed wheel or a system of such wheels

  • cog

    often refers to a single tooth, though some speakers also use it for the whole wheel

  • sprocket

    a toothed wheel that usually works with a chain rather than directly with another toothed wheel

文法句型

a/an + cogwheel

cogwheel + in + machine

turn / spin a cogwheel

用法筆記

Usually refers to one toothed wheel inside a larger mechanism such as a clock, engine, or simple machine. In less technical everyday speech, many speakers use the broader word 'gear' unless the exact wheel shape matters.

常見錯誤

❌The bicycle's front cogwheel is flat.
✅The bicycle's front wheel is flat.
💡'cogwheel' is a toothed machine part, not an ordinary smooth vehicle wheel.