slasher

slasher
 n.— «Slasher—one who works hard to make an impression on the boss.» —“Jargon From Bricklayers, Masons and Plasterers International Union of America, Local 37, 389 East 154th St.” in New York City Lexicon of Trade Jargon , 1938-39. (source: Double-Tongued Dictionary)

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