- a rising and falling valve consisting of a disk at the end of a vertically set stem, used in internal-combustion and steam engines.
- a girl or child (used as a term of endearment).
- any of the vertical timbers bracing the bow or stern of a vessel about to be launched.
- poppit.
- poppethead.
- a term of affection for a small child or sweetheart
- a mushroom-shaped valve that is lifted from its seating against a spring by applying an axial force to its stem: commonly used as an exhaust or inlet valve in an internal-combustion engine
- a temporary supporting brace for a vessel hauled on land or in a dry dock
