timer

(tīmər)

noun

    1. timekeeper
    2. stopwatch
  1. ☆ in internal-combustion engines, any part or system designed to control the timing of the spark in the cylinder
  2. any of various devices for timing, or automatically starting and stopping at predetermined times, the operation of some mechanism

See timer in American Heritage Dictionary 4

noun
  1. One who keeps track of time; a timekeeper.
  2. A timepiece, especially one used for measuring and signaling the end of time intervals, as on a stove.
  3. A switch or regulator that controls or activates and deactivates another mechanism at set times.
  4. A device that controls the timing of the sparks that ignite the fuel in an internal-combustion engine.

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