[pop-it] 
| 1. | Also called poppet valve. Machinery. a rising and falling valve consisting of a disk at the end of a vertically set stem, used in internal-combustion and steam engines. |
| 2. | British Dialect. a term of endearment for a girl or child. |
| 3. | Nautical. any of the vertical timbers bracing the bow or stern of a vessel about to be launched. |
| 4. | poppit. |
| 5. | poppethead. |
| poppet valve n. An intake or exhaust valve, operated by springs and cams, that plugs and unplugs its opening by axial motion. |
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