Open English Wordnet
Nouns
(n)callosity, callusan area of skin that is thick or hard from continual pressure or friction (as the sole of the foot) (n)callusbony tissue formed during the healing of a fractured bone (n)callus(botany) an isolated thickening of tissue, especially a stiff protuberance on the lip of an orchid Verbs
(v)calluscause a callus to form on“The long march had callused his feet” (v)callusform a callus or calluses“His foot callused”