Lexi1 - piston - definition and examples

piston (noun) /ˈpɪstən/

1

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)

2

(music) A valve device in some brass instruments for changing the pitch

1

(intransitive) To move up and down or in and out like a piston.

1

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)

2

(music) A valve device in some brass instruments for changing the pitch

1

(intransitive) To move up and down or in and out like a piston.