Hump  —n. 1 rounded protuberance on a camel's back, or as an abnormality on a person's back. 2 rounded raised mass of earth etc. 3 critical point in an undertaking. 4 (prec. By the) slang fit of depression or vexation (gave me the hump). —v. 1 (often foll. By about) colloq. Lift or carry (heavy objects etc.) With difficulty. 2 make hump-shaped. [probably low german or dutch]