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Callus
01
an area of skin that has turned hard and rough by being constantly exposed to friction
Example
The weightlifter 's palms were covered in thick calluses from lifting heavy weights.
His hands bore calluses from years of playing the guitar.
She developed a callus on her foot after wearing tight shoes for too long.
02
(botany) an isolated thickening of tissue, especially a stiff protuberance on the lip of an orchid
03
bony tissue formed during the healing of a fractured bone
