Etymology
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gandy dancer 
"railroad maintenance worker," 1918, American English slang, of unknown origin; dancer perhaps from movements required in the work of tamping down ties or pumping a hand-cart, gandy perhaps from the name of a machinery belt company in Baltimore, Maryland.
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civil service (n.)

"the executive branch of the public service," as distinguished from the military, naval, legislative, or judicial, 1765, originally in reference to non-military staff of the East India Company, from civil in the sense "not military." Civil servant is from 1792.

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drawing room (n.)

"room appropriated for the reception of company," 1640s, short for withdrawing room (16c.; see withdraw), into which ladies would retire after dinner. Earlier in the sense of "private room" as draw-chamber (mid-15c.); drawyng chaumber (early 15c.).

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