1. A mushroom-shaped valve that rises perpendicularly from its seat; commonly used in internal-combustion engines
   - poppet valve

Derived forms: poppets

Type of: valve

Part of: ICE, internal-combustion engine

Encyclopedia: Poppet

• rock the boat
• rock wallaby
• rock wool
• rock wren
• rock-and-roll
• rock-bottom
• rock-inhabiting
• rock-loving
• rock-ribbed
• rock-steady
• rockabilly
• rockbound
• rockchuck
• rockcress
• Rockefeller
• rocker
• rocker arm
• rockers
• rockery
• rocket
• rocket base
• rocket cress
• rocket engine
• rocket engineer
• rocket firing