Main Entry: black and tan

Function: noun

Date: 1870

1 : a black-and-tan animal (as a dog)
2 chiefly British : a drink consisting of a dark beer (as stout or porter) and ale or beer of a paler color
3 capitalized B&T [from the color of his uniform] : a recruit enlisted in England in 1920–21 for service in the Royal Irish Constabulary against the armed movement for Irish independence
4 : a member of a black-and-tan political organization (as in the southern United States) — compare lily-white