nipper

noun

1. anything that nips, or pinches
2. any of various tools for grasping or severing wire, etc. as pliers, pincers, or forceps
3. any of certain organs of animals, used in biting, grasping, holding, etc.; specif.,
   1. an incisor tooth of a horse
   2. the pincerlike claw of a crab or lobster; chela
4. Chiefly Brit., Informal a small boy; lad
5. Slang handcuffs or leg irons