clavus

from WordNet (r) 3.0 (2006)

clavus
    n 1: a hard thickening of the skin (especially on the top or
         sides of the toes) caused by the pressure of ill-fitting
         shoes [syn: {corn}, {clavus}]

from The Collaborative International Dictionary of English v.0.48

Clavus \Cla"vus\, n. [L., a nail.]
   A callous growth, esp. one the foot; a corn.
   [1913 Webster]

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