Tu″ni‐cle (?), n. [L. tunicula a little tunic, coat, or membrane, dim. of tunica a tunic: cf. OF. tunicle.] 1. A slight natural covering; an integument.
The tunicles that make the ball or apple of the eye. Holland.
2. (R. C. Ch.) A short, close-fitting vestment worn by bishops under the dalmatic, and by subdeacons.