Definition of tunic

• n. - An under-garment worn by the ancient Romans of both sexes. It was made with or without sleeves, reached to or below the knees, and was confined at the waist by a girdle.
• n. - Any similar garment worm by ancient or Oriental peoples; also, a common name for various styles of loose-fitting under-garments and over-garments worn in modern times by Europeans and others.
• n. - Same as Tunicle.
• n. - A membrane, or layer of tissue, especially when enveloping an organ or part, as the eye.
• n. - A natural covering; an integument; as, the tunic of a seed.
• n. - See Mantle, n., 3 (a).