The Collaborative International Dictionary of English v.0.48:

Hereford \Her"e*ford\, n.
   One of a breed of cattle originating in Herefordshire,
   England. The Herefords are good working animals, and their
   beef-producing quality is excellent.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Hereford
    n 1: hardy English breed of dairy cattle raised extensively in
         United States [syn: Hereford, whiteface]