Plunger

来自Big Physics
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wiktionary

ref

From plunge +‎ -er.


etymonline

ref

plunger (n.)

1610s, "one who plunges," agent noun from plunge (v.). Used of various mechanisms (for example the dasher of a churn) by 1777; as "device used by a plumber to clear blocked pipes," by 1936.

取自“https://www.bigphysics.org/index.php?title=Plunger&oldid=49377”