HUMP

I. noun Etymology: akin to Middle Low German ~ bump, Dutch homp lump, chunk, Frisian homp, himp Date: 1681 a rounded protuberance: as, ~back 1, a fleshy protuberance on the back of an animal (as a camel, bison, or whale), c. mound , hummock , mountain , range , a fit of depression or sulking, a difficult, trying, or critical phase or obstacle, ~ed adjective II. verb Date: circa 1785 transitive verb to copulate with, to exert (oneself) vigorously, to make ~backed ; hunch , to put or carry on the back ; lug , intransitive verb to exert oneself ; hustle , to move swiftly ; race