cowhide - a heavy flexible whip made of braided cowhide

leather - an animal skin made smooth and flexible by removing the hair and then tanning

fell, hide - the dressed skin of an animal (especially a large animal)

whip - an instrument with a handle and a flexible lash that is used for whipping

cowhide, cowskin - leather made from the hide of a cow

flog, lash, trounce, welt, whip, lather, slash, strap - beat severely with a whip or rod; "The teacher often flogged the students"; "The children were severely trounced"