Map, Maw, Mouth, Muffle, Muffler, Mug, Mush, Mute, Nib, Nose, Nostrils, Nozzle, Pecker, Pillory, Proboscis, Prostrate, Puss, Quash, Quell, Quench, Quiet, Quieten, Reins, Repress, Restraint, Restraints, Rostrum, Shackle, Silence, Silencer, Smash, Smother, Snout, Soundproofing, Squash, Squelch, Stifle, Still, Stocks, Straitjacket, Strangle, Stranglehold, Stultify, Subdue, Suffocate, Suppress, Tether, Throttle, Trammel, Trap, Trunk, Visage, Yap, Yoke, Asphyxiate, Baffler, Beak, Bill, Bond, Bonds, Bridle, Bugle, Camisole, Censor, Chains, Chaps, Choke, Chops, Collar, Conk, Cork, Countenance, Crush, Cuffs, Cushion, Damp, Damper, Deflate, Dial, Disarm, Drown, Dumbfound, Enchain, Extinguish, Face, Features, Fetter, Gab, Gag, Halter, Hamper, Hamstring, Handcuff, Handcuffs, Hobble, Hobbles, Hush, Irons, Jaw, Jaws, Jowls, Kill, Kisser, Leash, Lips, Manacle, Mandibles