tic

Short definition from Wiktionary

Noun

1. 1
   A sudden, nonrhythmic motor movement or vocalization.
2. 2
   Something that is done or produced habitually or characteristically.
3. 3
   Clipping of ticket.
4. 4
   Initialism of tourist information centre.
5. 5
   Initialism of tenancy in common.
6. 6
   Initialism of total invested capital.
7. 7
   Initialism of offence to be taken into consideration.
8. 8
   Initialism of translocon on inner chloroplast membrane.
9. 9
   Initialism of thermal imaging camera.

Verb

1. 1
   To exhibit a tic; to undergo a sudden, semi-voluntary muscle movement.