Meaning of “flinch” in the English Dictionary

british dictionary

"flinch" in American English

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flinchverb [ I ]

us /flɪntʃ/

to make a sudden small movement because of pain or fear:

Now I’m going to move the eyepiece right up against your eye for a second – try not to flinch.

(Definition of “flinch” from the Cambridge Academic Content Dictionary © Cambridge University Press)