prop /ˈprɑp/
  支柱,支持者,倚靠人,道具,螺旋槳(vt.)支撐,維持
  Prop n. A shell, used as a die. See Props.
  Prop v. t. [imp. & p. p. Propped p. pr. & vb. n. Propping.]  To support, or prevent from falling, by placing something under or against; as, to prop up a fence or an old building; (Fig.)  to sustain; to maintain; as, to prop a declining state.
     Till the bright mountains prop the incumbent sky.   --Pope.
     For being not propp'd by ancestry.   --Shak.
     I prop myself upon those few supports that are left me.   --Pope.
  Prop, n.  That which sustains an incumbent weight; that on which anything rests or leans for support; a support; a stay; as, a prop for a building. “Two props of virtue.”
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  prop
       n 1: a support placed beneath or against something to keep it
            from shaking or falling
       2: any movable articles or objects used on the set of a play or
          movie; "before every scene he ran down his checklist of
          props" [syn: property]
       3: a propeller that rotates to push against air [syn: airplane
          propeller, airscrew]
       v : support by placing against something solid or rigid; "shore
           and buttress an old building" [syn: prop up, shore up,
            shore]
       [also: propping, propped]