Definition of tic noun from the Oxford Advanced Learner's Dictionary



BrE BrE//tɪk//
; NAmE NAmE//tɪk//
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a sudden quick movement of a muscle, especially in your face or head, that you cannot control a nervous tic There was a persistent tic in her left cheek. Word Originearly 19th cent.: from French, from Italian ticchio.
See the Oxford Advanced American Dictionary entry: tic