from
The Collaborative International Dictionary of English v.0.48
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.
[1913 Webster]
Welcome, gentlemen! Ladies that have their toes
Unplagued with corns, will have a bout with you.
--Shak.
[1913 Webster]
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}.
[1913 Webster]