dipstick

(dipstik′)

noun

a graduated metal rod for measuring the depth of a substance in its container, as of oil in a crankcase

See dipstick in American Heritage Dictionary 4

noun
  1. A graduated rod for measuring the depth or amount of liquid in a container, as of oil in a crankcase.
  2. Slang A person regarded as foolish or contemptible.

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dipstick

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