/three"pees"/ , adj.
1. Clothing. consisting of three matching or harmonious pieces, as an ensemble of coat, skirt, and blouse for a woman or a suit of a jacket, vest, and pair of trousers for a man.
2. having three parts.
n.
3. a three-piece ensemble or suit. Cf. coordinate (def. 7).
[ 1905-10 ]