† Key sb.⁴

obs. pl. of COW, q.v. Hence † key-whit (= -quit), money paid in lieu of the tithe of milk.

1507.  Pilton Church-w. Acc. (Som. Rec. Soc.), 54. Item Receved of Willyam Townysende and Iohn Dore for Key Whyt … ix^s v^d.