callus [ 'kæləs ]

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

    同义词： callosity

  • bony tissue formed during the healing of a fractured bone
  • (botany) an isolated thickening of tissue, especially a stiff protuberance on the lip of an orchid
• v.
  • cause a callus to form on

    "The long march had callused his feet"

  • form a callus or calluses

    "His foot callused"

以上来源于: WordNet