#1 prop n. a support placed beneath or against something to keep it from shaking or falling. wn
#2 prop v. [prop up, shore up, shore] support by placing against something solid or rigid; "shore and buttress an old building". wn
#3 prop n. [property] any movable articles or objects used on the set of a play or movie; "before every scene he ran down his checklist of props". wn
#4 prop n. [airplane propeller, airscrew] a propeller that rotates to push against air. wn
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