1. (

• callosity ,
• callus ,

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

2. (

• callus

) bony tissue formed during the healing of a fractured bone ;

3. (

• callus

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

1. (

• callus ,

) cause a callus to form on; "The long march had callused his feet" ;

2. (

• callus

) form a callus or calluses; "His foot callused" ;