Crossword Genius

___ Tac (mint) (3)

Ross

I believe the answer is:

tic

(Other definitions for tic that I've seen before include "Convulsive spasm" , "Convulsive twitching" , "Regular muscular twitch" , "Involuntary muscular spasm" , "Jerky movement" .)

I've seen this clue in The New York Times.
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