post horn (0 synonym found)

Definition of post horn:

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

Definition of post horn:

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

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