callus - noun

an area of skin that is thick or hard from continual pressure or friction (as the sole of the foot)

bony tissue formed during the healing of a fractured bone

(botany) an isolated thickening of tissue, especially a stiff protuberance on the lip of an orchid

callus - verb

• cause a callus to form on
• form a callus or calluses

callus - thesaurus

callosity