1. A mushroom-shaped valve that rises perpendicularly from its seat; commonly used in internal-combustion engines
   "The mechanic replaced the worn poppet valve in the engine";
   - poppet valve
    
2. [Brit, informal] Term of endearment, especially for a child
   "Come here, poppet, let me fix your hair"

Derived forms: poppets

Type of: valve

Part of: ICE, internal-combustion engine

Encyclopedia: Poppet