[shirt] n [ME shirte, fr. OE scyrte; akin to ON skyrta shirt, OE scort short] (bef. 12c) 1: a garment for the upper part of the body: as a: a cloth garment usu. having a collar, sleeves, a front opening, and a tail long enough to be tucked inside trousers or a skirt b: undershirt
2: all or a large part of one's money or resources "lost his ~ on that business deal" -- shirt.less adj