flinch
1. [ verb ] draw back, as with fear or pain
Synonyms: cringe recoil shrink wince quail funk squinch
Examples:

"she flinched when they showed the slaughtering of the calf"

Related terms: move shrink_back wince
2. [ noun ] (biology,medicine) a reflex response to sudden pain
Synonyms: wince
Related terms: startle
Similar spelling:   Flinchum
  flnc
  Flinck
  fluency
  flowing
  flounce
  fleeing
  flunk
  Flink
  fling
  flank
  flying
  flunky
  flange