Etymology
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mud-flap (n.)

"piece of rubber behind the wheel of a vehicle to prevent mud from splashing," 1903, from mud (n.) + flap (n.).

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defund (v.)

"prevent from continuing to receive funds," by 1978; see de- + fund (v.). Related: Defunded; defunding.

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coaming (n.)

1610s, nautical, "raised border or edge of a hatch" (to prevent water on deck from running below), of unknown origin.

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door-stop (n.)

"device placed behind a door to prevent it from being opened too widely," 1859, from door + stop (n.).

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estop (v.)
in law, "to bar, prevent, preclude," 1530s, from Anglo-French estopper "to stop, bar, hinder" (especially in a legal sense, by one's own prior act or declaration), from Old French estoper "plug, stop up, block; prevent, halt" (also in obscene usage), from estope "tow, oakum," from Latin stuppa "tow" (used as a plug); see stop (v.).
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coast guard (n.)

also coast-guard, 1827, a guard stationed on a coast, originally to prevent smuggling, later serving as a general police force for the coast; see coast (n.) + guard (n.).

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pinion (v.)
"disable by binding the arms," 1550s, older in English than literal sense "cut or bind the pinions (of a bird's wing) to prevent flying" (1570s); from pinion (n.1). Related: Pinioned.
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ice-bound (adj.)

"obstructed by ice; frozen in; surrounded or hemmed in by ice, so as to prevent progress or approach," 1650s, from ice (n.) + bound (adj.1).

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forfend (v.)
also forefend, late 14c., "to protect; to prohibit; to avert, fend off, prevent," a hybrid from for- + fend "to ward off." Archaic, if not obsolete.
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save (n.)

in the sports sense of "act of preventing opponent from scoring," 1890, from save (v.). The verb save in a sporting sense of "prevent the opposing side from gaining (a run, goal, etc.)" is by 1816.

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