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

Sounds like: callous, Callas

Derived forms: calluses, callusing, callused

Type of: cicatrice, cicatrix, enation, harden, hardening, indurate, plant process, scar

Encyclopedia: Callus