- speculator, plunger - someone who risks losses for the possibility of considerable gains
--1 is a kind of adventurer, venturer; gambler
--1 has particulars: hedger; operator; scalper; venture capitalist - diver, plunger - someone who dives (into water)
--2 is a kind of swimmer
Derived forms: verb plunge6, verb plunge1 - plunger, plumber's helper - hand tool consisting of a stick with a rubber suction cup at one end; used to clean clogged drains
--3 is a kind of hand tool
Derived forms: verb plunge1, verb plunge7 - piston, plunger - mechanical device that has a plunging or thrusting motion
--4 is a kind of mechanical device
--4 is a part of reciprocating engine
--4 has parts: piston ring; piston rodDerived form: verb plunge1