Tuber

The term tuber - Latin n. For "bulge", "hump"; metaphorically also “big mistake”; Diminutive: tubercle, tuberculum - stands for:

Real truffles , a genus within the real sac mushrooms in botany
Tube (climbing) , term for a type of belay device used in climbing
in anatomy as a term for a cusp or (often bony) protrusion, for example the cusp of the calcaneus
in dermatology for a superficial lump in the skin, see efflorescence
in neurology, a malformation of the cerebral cortex typical of tuberous sclerosis
in pharmaceuticals for a tuber (the tuber radicis )
a Greek stoner rock band

See also:

Wiktionary: Tuber - explanations of meanings, word origins, synonyms, translations