THESAURUS
crupper
back band, backside, backstrap, bearing rein, behind, bellyband, bit, blinders, blinds, breeching, bridle, butt, buttocks, caparison, cavesson, checkrein, cheekpiece, chinband, cinch, collar, croup, crownband, curb, gag swivel, girth, hackamore, halter, hames, hametugs, harness, haunches, headgear, headstall, hind end, hip straps, jaquima, jerk line, lines, martingale, nates, noseband, pole strap, posterior, rear, rear end, reins, ribbons, rump, saddle, shaft tug, side check, snaffle, surcingle, tack, tackle, trappings, tug, winker braces, yoke
ROGET THESAURUS
crupper
Rear
N
rear, back, posteriority, rear rank, rear guard, background, hinterland, occiput, nape, chine, heels, tail, rump, croup, buttock, posteriors, backside scut, breech, dorsum, loin, dorsal region, lumbar region, hind quarters, aitchbone, natch, natch bone, stern, poop, afterpart, heelpiece,
crupper, wake, train, reverse, other side of the shield, back, rear, hind, hinder, hindmost, hindermost, postern, posterior, dorsal, after, caudal, lumbar, mizzen, tergal, behind, in the rear, in the background, behind one's back, at the heels of, at the tail of, at the back of, back to back, after, aft, abaft, astern, sternmost, aback, rearward, ogni medaglia ha il suo rovescio, the other side of the coin.