plunger
- n. [机] 活塞；潜水者；跳水者；莽撞的人
英英释意
- 1. someone who risks losses for the possibility of considerable gains
- 2. someone who dives (into water)
- 3. hand tool consisting of a stick with a rubber suction cup at one end; used to clean clogged drains
- 4. mechanical device that has a plunging or thrusting motion