n.
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 callus v.
1.cause a callus to form on
2.form a callus or calluses
Idiom of the Day
send (something) C.O.D.
to send merchandise to someone who will pay for it when it is delivered
The company sent the computer printer C.O.D.