Twitch

contrazione

((physiology) muscle contraction)

imboccatura

((farriery))

spasimo

(brief, small (sometimes involuntary) movement out of place and then back again)

spasmo

((physiology) muscle contraction)

tic

(brief, small (sometimes involuntary) movement out of place and then back again)

tremito

((physiology) muscle contraction)

identificare

(to spot a bird)

individuare

(to spot a bird)

spasimare

(to perform a twitch; spasm)

strattonare

(to jerk sharply and briefly)