Source : Webster's Revised Unabridged Dictionary (1913)

Cornfield \Corn"field`\ (k?rn"f?ld`), n.
   A field where corn is or has been growing; -- in England, a
   field of wheat, rye, barley, or oats; in America, a field of
   Indian corn.

Source : WordNet®

cornfield
     n : a field planted with corn [syn: {corn field}]