backset

n. 倒退,逆流,涡流

backcomb (also tease), backdate, backdrop, backer, backfire, backgammon, background, backhand, backhanded, backhander, backing, backlash, backless, backlist, backlog, backpack, backpacker, backpacking, backrest, backscratcher, backside, backslide, backsliding, backspace, backstage, backstroke, backtrack, backup, backward, backward(s), backwardness, backwards, backwards (also backward), backwash, backwater, backwoods, backwoodsman, backyard, bacon, bacteria,