1.Definition: hand tool consisting of a stick with a rubber suction cup at one end; used to clean clogged drains

Category: Objects

2.Definition: mechanical device that has a plunging or thrusting motion

Related Noun(s):piston

Category: Objects

3.Definition: someone who dives (into water)

Related Noun(s):diver

Category: People

4.Definition: someone who risks losses for the possibility of considerable gains

Related Noun(s):speculator

Category: People