noun Download 🔗Share A solid disk or cylinder that fits inside a hollow cylinder, and moves under pressure (as in an engine) or displaces fluid (as in a pump) Examples : "The car's engine used a piston to compress the air and create power. " machine technical part device energy Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share A valve device in some brass instruments for changing the pitch Examples : "The brass band's music teacher showed the students how to use the piston valves to play different notes. " music device technical machine Chat with AIVocabulary GamePractice Reading
verb Download 🔗Share To move up and down like a piston. Examples : "The elevator pistoned up and down, carrying the workers to the different floors. " machine technical action Chat with AIVocabulary GamePractice Reading
