n. A protuberance; a swelling.n. Especially— A hunch or protuberance on the back, caused by an abnormal curvature of the spine, or by natural growth: as, a man with a hump; a camel with two humps; the hump on the back of a whale.n. In entomology, a projection on the back of a larva, formed by an upward enlargement of a whole segment, which is then said to be humped. Projections of this kind are very common in the larvæ of the Lepidoptera.To bend or hunch so as to form a hump, as the back in some kinds of labor, like that of a miner or ditcher, or as cattle in cold or stormy weather.To prepare for a great effort; gather (one's self) together; hurry; exert (one's self): as, hump yourself now.To huff; vex.In cutlery, to round off, as scissors.To use great exertion; put forth effort.n. A sailors' name for a worthless member of the crew; a green hand.n. A long tramp with a load on the back.