callosity

from WordNet (r) 3.0 (2006)

callosity
    n 1: an area of skin that is thick or hard from continual
         pressure or friction (as the sole of the foot) [syn:
         {callosity}, {callus}]
    2: devoid of passion or feeling; hardheartedness [syn:
       {unfeelingness}, {callousness}, {callosity}, {hardness},
       {insensibility}]

from The Collaborative International Dictionary of English v.0.48

Callosity \Cal*los"i*ty\, n.; pl. {Callosities}. [L. callasitas;
   cf. F. calost['e].]
   A hard or thickened spot or protuberance; a hardening and
   thickening of the skin or bark of a part, eps. as a result of
   continued pressure or friction.
   [1913 Webster]

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