'dipstick' definitions:

Definition of 'dipstick'

(from WordNet)
noun
A graduated rod dipped into a container to indicate the fluid level

Definition of 'dipstick'

From: GCIDE
  • dipstick \dipstick\ n. a graduated rod dipped into a container to indicate the fluid level; as, to check the oil level in a car with a dipstick. [WordNet 1.5]