poppet: Meaning and Definition of

pop•pet

1. Also calleda rising and falling valve consisting of a disk at the end of a vertically set stem, used in internal-combustion and steam engines.
2. a term of endearment for a girl or child.
3. any of the vertical timbers bracing the bow or stern of a vessel about to be launched.
4. poppit.
5. poppethead.