A habitual spasmodic contraction of the muscles, most often in the face
he had a nervous tic around his left eye
(In the UK) a kind of manual semaphore used by racecourse bookmakers to exchange information
A tic caused by (or attributed to) nervous dysfunction; (in extended use) a repetitive action, especially one performed out of nervousness; a habitual response.
Another term for trigeminal neuralgia.
North American term for noughts and crosses.