The Collaborative International Dictionary of English v.0.48:

Bear \Bear\, Bere \Bere\ (b[=e]r), n. [AS. bere. See Barley.]
   (Bot.)
   Barley; the six-rowed barley or the four-rowed barley,
   commonly the former (Hordeum hexastichon or Hordeum
   vulgare). [Obs. except in North of Eng. and Scot.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

Hordeum vulgare
    n 1: grass yielding grain used for breakfast food and animal
         feed and in malt beverages [syn: common barley, Hordeum
         vulgare]