Rawhide

n. untanned leather, unprocessed animal hide; whip or lash made from unprocessed leather

Rawhide is a hide or animal skin that has not been exposed to tanning and thus is much lighter in color than treated animal hides (leather). The skin from buffalo, deer, elk or cattle from which most rawhide originates is devoid of all fur, meat and fat. The resulting material is often only semi-pliable and permeable to light.
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Noun
1. untanned hide especially of cattle; cut in strips it is used for whips and ropes
(hypernym) hide, fell

(n.)
A cowhide, or coarse riding whip, made of untanned (or raw) hide twisted.
  

Synonyms and related words:
Leatherette, Leatheroid, baste, bastinado, beat, belabor, belt, birch, blacksnake, buffet, bullwhack, bullwhip, cane, cat, club, coat, cowhide, crop, cudgel, cut, cuticle, dermis, drub, fell, flagellate, flagellum, flail, fleece, flesh, flog, fur, furring, fustigate, give a whipping, give the stick, hide, horsewhip, imitation fur, imitation leather, integument, jacket, knout, kurbash, lace, lash, lay on, leather, leather paper, outer layer, outer skin, pelt, peltry, pistol-whip, pommel, pummel, quirt, razor strap, rind, scourge, sheath, sjambok, skin, skins, smite, spank, strap, stripe, swinge, switch, tegument, thong, thrash, thump, trounce, truncheon, vair, wallop, whale, whip, whiplash, whop