backer

n 1 person who gives (esp financial) support to another person, an undertaking, etc 赞助人; （尤指）资助人. 2 person who bets money on a horse, etc （赛马等中的）下赌注者.

back seat, back talk, back up, back-bench, back-bencher, back-breaking, back-formation, back-pedal, back-up, back-yard, backache, backbite, backbiter, backbiting, backbone, backchat, backcloth, backcomb (also tease), backdate, backdrop, backfire, backgammon, background, backhand, backhanded, backhander, backing, backlash, backless, backlist, backlog, backpack, backpacker, backpacking, backrest, backscratcher, backset, backside, backslide, backsliding,