Meaning & Definition of Callus in English

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

2. Bony tissue formed during the healing of a fractured bone

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

1. Cause a callus to form on

• "The long march had callused his feet"

2. Form a callus or calluses

• "His foot callused"