piston

Từ điển Oxford Advanced Learner 8th

pis·ton [piston pistons] BrE [ˈpɪstən] NAmE [ˈpɪstən] noun
a part of an engine that consists of a short ↑cylinder that fits inside a tube and moves up and down or backwards and forwards to make other parts of the engine move

Word Origin:
early 18th cent.: from French, from Italian pistone, variant of pestone ‘large pestle’, augmentative of pestello ‘pestle’.

• Từ đồng nghĩa / Synonyms:
  plunger, Piston, Walter Piston