Haver \Ha"ver\, n. A possessor; a holder. --Shak. 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. Haver \Ha"ver\, v. i. [Etymol. uncertain.] To maunder; to talk foolishly; to chatter. [Scot.] --Sir W. Scott.