[1] : The Collaborative International Dictionary of English v.0.48

wince \wince\, v. i. imp.  p. p. winced; p. pr.  vb. n.
   wincing. oe. wincen, winchen, of. quencir, guenchir,
   guenchier, giencier, guinchier, and assumed winchier,
   winchir, to give way, to turn aside, fr. ohg. wankjan,
   wenken, to give way, to waver, fr. winchan to turn aside, to
   nod, akin to e. wink. see wink.
   1913 webster
   1. to shrink, as from a blow, or from pain; to flinch; to
      start back.
      1913 webster

            i will not stir, nor wince, nor speak a word.
                                                  --shak.
      1913 webster

   2. to kick or flounce when unsteady, or impatient at a rider;
      as, a horse winces.
      1913 webster
see also:
winced wincing wink 

[2] : The Collaborative International Dictionary of English v.0.48

wincing \win"cing\, n.
   the act of washing cloth, dipping it in dye, etc., with a
   wince.
   1913 webster

   wincing machine.
   a a wince. --ure.
   b a succession of winces. see wince. --knight.
       1913 webster
see also:
wincing machine wince 

Wincing >> W Words
Wincing, definition of term: Wincing
wincing_pag1.html