#1 wince v. [flinch, squinch, funk, cringe, shrink, recoil, quail] draw back, as with fear or pain; "she flinched when they showed the slaughtering of the calf". wn
#2 wince v. make a face indicating disgust or dislike; "She winced when she heard his pompous speech". wn
#3 wince n. the facial expression of sudden pain. wn
#4 wince n. [flinch] a reflex response to sudden pain. wn
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