late O.E., from S.W. Midlands dial.
eovese (sing.), from O.E.
efes "edge of a roof," from P.Gmc.
*ubaswa-/*ubiswa (cf. O.H.G.
obasa "porch, hall, roof," Goth.
ubizwa "porch," Ger.
oben "above"), from the root of
over. Treated as plural and new singular form
eave emerged c.1580.