1. [ noun ] (medicine) bony tissue formed during the healing of a fractured bone
Related terms: scar chestnut
2. [ noun ] (medicine) an area of skin that is thick or hard from continual pressure or friction (as the sole of the foot)
Synonyms: callosity
Related terms: hardening corn
3. [ verb ] form a callus or calluses

"His foot callused"

Related terms: harden callosity
4. [ verb ] cause a callus to form on

"The long march had callused his feet"

Related terms: harden callosity
5. [ noun ] (botany) an isolated thickening of tissue, especially a stiff protuberance on the lip of an orchid
Related terms: plant_process botany
Similar spelling:   callous