Definitions
mechanical device that has a plunging or thrusting motion
Word origin
From plunge + -er.
Used in a sentence
“Well I suppose there's not one of you gentlemen here who hasnt^([sic]) at some time or other taken a plunger, and how many of you hasnt^([sic]) come back sadder and wiser.”
“Another part of the invention relates to making articles of earthenware by a plunger, which is forced into a mould”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer2 curated clues
01“Drain pump”7 letters
02“Sink-clearing tool”7 letters
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