The Collaborative International Dictionary
Haver cake
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.