Source : Webster's Revised Unabridged Dictionary (1913)

Pullback \Pull"back`\, n.
   1. That which holds back, or causes to recede; a drawback; a
      hindrance.

   2. (Arch) The iron hook fixed to a casement to pull it shut,
      or to hold it party open at a fixed point.

Source : WordNet®

pullback
     n 1: a device (as a decorative loop of cord or fabric) for
          holding or drawing something back; "the draperies were
          drawn to the sides by pullbacks" [syn: {tieback}]
     2: (military) the act of pulling back (especially an orderly
        withdrawal of troops); "the pullback is expected to be
        over 25,000 troops"