- an area of skin that is thick or hard from continual pressure or friction (as the sole of the foot)
- unfeelingness: devoid of passion or feeling; hardheartedness
- A callosity is another name for callus, a piece of skin that has become thickened as a result of repeated contact and friction.
- A callus; A callous demeanour; insensitivity or hardheartedness
- A patch of rough thickened skin on the head of a right whale, often infested with whale lice.
- a thickened and hardened swelling on the surface of an organ.
- callosité / durillon / induration