Reins1. (n. pl.) The kidneys; also, the region of the kidneys; the loins.
2. (n. pl.) The inward impulses; the affections and passions; -- so called because formerly supposed to have their seat in the part of the body where the kidneys are.
Thesaurus Entries
Oregon boat, back band, backstrap, bearing rein, bellyband, bilbo, bit, blinders, blinds, bond, bonds, breeching, bridle, camisole, caparison, cavesson, chains, checkrein, cheekpiece, chinband, cinch, collar, crownband, crupper, cuffs, curb, fetter, gag, gag swivel, girth, gyves, hackamore, halter, hames, hametugs, hamper, handcuffs, harness, headgear, headstall, helm, hip straps, hobbles, hopples, irons, jaquima, jerk line, leading strings, leash, lines, manacle, martingale, muzzle, noseband, pillory, pole strap, reins of government, restraint, restraints, ribbons, rudder, saddle, shackle, shaft tug, side check, snaffle, stocks, straightjacket, strait-waistcoat, straitjacket, stranglehold, surcingle, tack, tackle, tether, tiller, trammel, trammels, trappings, tug, wheel, winker braces, yoke