The Collaborative International Dictionary of English v.0.48:

Pinch \Pinch\, n.
   1. A close compression, as with the ends of the fingers, or
      with an instrument; a nip.
      [1913 Webster]

   2. As much as may be taken between the finger and thumb; any
      very small quantity; as, a pinch of snuff.
      [1913 Webster]

   3. Pian; pang. "Necessary's sharp pinch." --Shak.
      [1913 Webster]

   4. A lever having a projection at one end, acting as a
      fulcrum, -- used chiefly to roll heavy wheels, etc. Called
      also pinch bar.
      [1913 Webster]

   At a pinch, On a pinch, in an emergency; as, he could on
      a pinch read a little Latin.
      [1913 Webster]

WordNet (r) 3.0 (2006):

pinch bar
    n 1: a lever with a pointed projection that serves as a fulcrum;
         used to roll heavy wheels

Moby Thesaurus II by Grady Ward, 1.0:

23 Moby Thesaurus words for "pinch bar":
   bar, beam, boom, cant hook, claw bar, crank, crow, crowbar,
   handspike, iron crow, jimmy, lever, limb, marlinespike, outrigger,
   peavey, pedal, prize, pry, ripping bar, spar, treadle,
   wrecking bar