1. a sandwich of ground beef cooked in a spicy tomato or barbecue sauce and usually served on a bun.
2. a baggy, overlarge sweater originally worn by girls and young women in the 1940s.
3. a man or youth whose appearance is habitually slovenly.
Also, sloppy Joe, sloppy joe (for defs. 1, 2).
[ 1935-40 ]