"Aver."—Hogs not Pigs

In Wensleydale, North Yorkshire, the thin oat-cake (common in many mountainous parts of England) is called "*aver-cake*," or "*haver-cake*." The Loyal Dales Volunteers were surnamed "The Haver-cake Lads." Previously to seeing the Note of G.M., I imagined the "aver" to be derived from "avena" (Lat.), "avoine" (Fr.). What *dictionary* defines "aver" (French) as denoting the *annual* stock or produce of a farm?