呵呵。不過，我看到妳這個問題，壹下子就猜想起美國情景喜劇《friends》第壹集裏面有對話：
Chandler: All right Joey, be nice. So does he have a hump? A hump and a hairpiece?
Phoebe: Wait, does he eat chalk?
hump最常見的含義是：(a) round projecting part on the back of a camel, etc （駱駝等的）峰
在對話中的含義是：
(b) deformity on a person's back, where there is an abnormal curvature of the spine （人的）駝背.
註： hump還有很多其他用法。所以最好把所在句子寫出來。
Hope it helps.