tu ‧ nic /ˈtjuːnɪk $ ˈtuː-/ BrE AmE noun [countable]
[ Date: 1600-1700 ; Language: Latin ; Origin: tunica ]
1 . a long loose piece of clothing, usually without sleeves, worn in the past
2 . a long loose women’s shirt, usually worn with trousers
3 . British English a specially shaped short coat worn by soldiers, police officers etc as part of a uniform