[tu.nic] n [L tunica, of Sem origin; akin to Heb kuttoneth coat] (ca. 1609) 1 a: a simple slip-on garment made with or without sleeves and usu. knee-length or longer, belted at the waist, and worn as an under or outer garment by men and women of ancient Greece and Rome b: surcoat
2: an enclosing or covering membrane or tissue "the ~ of a seed"
3: a long usu. plain close-fitting jacket with high collar worn esp. as part of a uniform
4: tunicle
5. a: a short overskirt b: a hip-length or longer blouse or jacket