Source : Webster's Revised Unabridged Dictionary (1913)

Haver \Hav"er\, n. [D. haver; akin to G. haber.]
   The oat; oats. [Prov. Eng. & Scot.]

   {Haver bread}, oaten bread.

   {Haver cake}, oaten cake. --Piers Plowman.

   {Haver grass}, the wild oat.

   {Haver meal}, oatmeal.