plunger

plung·er

P0384100 (plŭn′jər)n.1. One who plunges or dives.2. A device consisting of a rubber suction cup attached to the end of a stick, used to unclog drains and pipes. Also called plumber's helper.3. A part of a machine, tool, or device that operates wtih a thrusting or plunging movement, such as a piston.

plunger

(ˈplʌndʒə) n1. (Tools) a rubber suction cup fixed to the end of a rod, used to clear blocked drains2. (Mechanical Engineering) a device or part of a machine that has a plunging or thrusting motion; piston3. informal a reckless gambler

plung•er

(ˈplʌn dʒər)

n. 1. a pistonlike reciprocating part moving within the cylinder of a pump or hydraulic device. 2. a device consisting of a handle with a rubber suction cup at one end, used as a force pump to free clogged drains and toilet traps. 3. a person or thing that plunges. 4. a reckless bettor or speculator. [1605–15]

Thesaurus

Noun	1.	plunger - someone who risks losses for the possibility of considerable gainsspeculatoradventurer, venturer - a person who enjoys taking risksgambler - a person who wagers money on the outcome of games or sporting eventshedger - someone who counterbalances one transaction (as a bet) against another in order to protect against lossoperator - a speculator who trades aggressively on stock or commodity marketsscalper - someone who buys something and resells it at a price far above the initial cost; "he got theater tickets through a scalper"venture capitalist - a speculator who makes money available for innovative projects (especially in high technology)
	2.	plunger - someone who dives (into water)diverswimmer - a trained athlete who participates in swimming meets; "he was an Olympic swimmer"
	3.	plunger - hand tool consisting of a stick with a rubber suction cup at one end; used to clean clogged drainsplumber's helperhand tool - a tool used with workers' hands
	4.	plunger - mechanical device that has a plunging or thrusting motionpistonmechanical device - mechanism consisting of a device that works on mechanical principlespiston ring - seal consisting of a split metal ring that seals the gap between a piston and the cylinder wallpiston rod - connecting rod that moves or is moved by a pistonreciprocating engine - an internal-combustion engine in which the crankshaft is turned by pistons moving up and down in cylinders

Translations

活塞

plunge

(plandʒ) verb1. to throw oneself down (into deep water etc); to dive. He plunged into the river. 跳入(水中) 跳入（水中） 2. to push (something) violently or suddenly into. He plunged a knife into the meat. (猛地)插入 （猛地）插入 noun an act of plunging; a dive. He took a plunge into the pool. 跳入 跳入ˈplunger noun an instrument for clearing blocked pipes etc by suction. 活塞 活塞take the plunge to (decide to) start doing something new or difficult. 冒險嘗試 冒险尝试