hump 
(hŭmp)
(hŭmp)n.
1. A rounded mass or protuberance, such as the fleshy structure on the back of a camel or of some cattle.
2. A deformity of the back in humans caused by an abnormal convex curvature of the upper spine.
3. Vulgar Slang The act or an instance of having sexual intercourse.
4.
a. A low mound of earth; a hummock.
b. A mountain range.
5. Chiefly British A fit of depression; an emotional slump.
v. humped, hump·ing, humps
v.tr.
1. To bend or round into a hump; arch.
2. Slang
a. To exert (oneself).
b. To carry, especially on the back.
3. Vulgar Slang To engage in sexual intercourse with.
v.intr.
Idiom: 1. Slang To exert oneself.
2. Slang To hurry.
3. Vulgar Slang To engage in sexual intercourse.
over the hump
Past the worst or most difficult part or stage: At last I'm over the hump on my term paper.
[Probably of Low German origin.]
humped (hŭmpt) adj.