English to English
noun
- a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it
source: WordNet 3.0
- device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone
source: WordNet 3.0
- control consisting of a mechanical device for controlling the flow of a fluid
source: WordNet 3.0
- the entire one-piece shell of a snail and certain other molluscs
source: WordNet 3.0
- one of the paired hinged shells of certain molluscs and of brachiopods
source: WordNet 3.0
- A door; especially, one of a pair of folding doors, or one of the leaves of such a door.
source: Webster 1913
