Search Result for "reins": 

The Collaborative International Dictionary of English v.0.48:

Reins \Reins\ (r[=a]nz), n. pl. [F. rein, pl. reins, fr. L. ren, pl. renes.] 1. The kidneys; also, the region of the kidneys; the loins. [1913 Webster] 2. 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. [1913 Webster] My reins rejoice, when thy lips speak right things. --Prov. xxiii. 16. [1913 Webster] I am he which searcheth the reins and hearts. --Rev. ii. 23. [1913 Webster] Reins of a vault (Arch.), the parts between the crown and the spring or abutment, including, and having especial reference to, the loading or filling behind the shell of the vault. The reins are to a vault nearly what the haunches are to an arch, and when a vault gives way by thrusting outward, it is because its reins are not sufficiently filled up. [1913 Webster]
Moby Thesaurus II by Grady Ward, 1.0:

83 Moby Thesaurus words for "reins": 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
Easton's 1897 Bible Dictionary:

Reins the kidneys, the supposed seat of the desires and affections; used metaphorically for "heart." The "reins" and the "heart" are often mentioned together, as denoting the whole moral constitution of man (Ps. 7:9; 16:7; 26:2; 139:13; Jer. 17:10, etc.).