Source : Webster's Revised Unabridged Dictionary (1913)

Core \Core\, v. t. [imp. & p. p. {Cord} (k?rd); p. pr. & vb. n.
   {Coring}.]
   1. To take out the core or inward parts of; as, to core an
      apple.

            He's likee a corn upon my great toe . . . he must be
            cored out.                            --Marston.

   2. To form by means of a core, as a hole in a casting.