(n.) A back with a hunch or hump; also, a hunchbacked person.

bowlegs camelback cleft palate clubfoot crookback defacement deformation deformity disfigurement flatfoot freakishness harelip humpback knock-knee kyphosis lordosis malconformation malformation misproportion misshape monstrosity mutilation splayfoot swayback talipes teratology torticollis truncation valgus wryneck