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PistillodyPistol
Pistol carbine
pistol grip
Pistol pipe
Pistol shot
pistol shrimp
pistol-whip
Pistolade
Pistole
Pistoleer
Pistolet
Piston
piston chamber
Piston displacement
Piston head
-- Piston ring --
piston rod
Piston valve
Pisum
Pisum arvense
Pisum sativum
Pisum sativum arvense
Pisum sativum macrocarpon
PISW
Pit
pit bull terrier
Pit coal
Pit frame
Pit head
Pit kiln
Pit martin
pit of the stomach
Piston ring
Pis´ton ring
| 1. | (Mach.) A spring packing ring, or any of several such rings, for a piston. |
| Noun | 1. |  piston ring - seal consisting of a split metal ring that seals the gap between a piston and the cylinder wall |