The Collaborative International Dictionary of English v.0.48:

Devon \De"von\, n.
   One of a breed of hardy cattle originating in the country of
   Devon, England. Those of pure blood have a deep red color.
   The small, longhorned variety, called North Devons, is
   distinguished by the superiority of its working oxen.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Devon
    n 1: a county in southwestern England [syn: Devon,
         Devonshire]
    2: red dual-purpose cattle of English origin