资料来源 : Webster's Revised Unabridged Dictionary (1913)

Corn \Corn\ (k[^o]rn), n. [L. cornu horn: cf. F. corne horn,
   hornlike excrescence. See {Horn}.]
   A thickening of the epidermis at some point, esp. on the
   toes, by friction or pressure. It is usually painful and
   troublesome.

         Welcome, gentlemen! Ladies that have their toes
         Unplagued with corns, will have a bout with you.
                                                  --Shak.

   Note: The substance of a corn usually resembles horn, but
         where moisture is present, as between the toes, it is
         white and sodden, and is called a {soft corn}.

资料来源 : WordNet®

soft corn
     n : corn having kernels almost entirely of soft starch [syn: {flour
         corn}, {squaw corn}, {Zea mays amylacea}]