backless

adj (of dress) cut low at the back1(2a) （指连衣裙）露出後背的.

back-yard, backache, backbite, backbiter, backbiting, backbone, backchat, backcloth, backcomb (also tease), backdate, backdrop, backer, backfire, backgammon, background, backhand, backhanded, backhander, backing, backlash, backlist, backlog, backpack, backpacker, backpacking, backrest, backscratcher, backset, backside, backslide, backsliding, backspace, backstage, backstroke, backtrack, backup, backward, backward(s), backwardness, backwards,