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Definition of piston noun from the Oxford Advanced Learner's Dictionary

piston

noun
 
/ˈpɪstən/
 
/ˈpɪstən/
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  1. 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
    Oxford Collocations DictionaryPiston is used before these nouns:
    • engine
    See full entry
    Word Originearly 18th cent.: from French, from Italian pistone, variant of pestone ‘large pestle’, augmentative of pestello ‘pestle’.
See piston in the Oxford Advanced American DictionarySee piston in the Oxford Learner's Dictionary of Academic English
Check pronunciation: piston

Nearby words

generic
adjective
 
 
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