Noun
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a sudden muscle spasm
especially one caused by a nervous condition
Verb
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move or pull with a sudden motion
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squeeze tightly between the fingers
"He pinched her behind"
"She squeezed the bottle"
-
toss with a sharp movement so as to cause to turn over in the air
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move with abrupt, seemingly uncontrolled motions
"The patient's legs were jerkings"
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make an uncontrolled, short, jerky motion
"his face is twitching"