alehoof
/ˈeɪlhuːf/ /ˈeɪlhʊf/(also ale-hoof, alliff) Now historical
noun
Ground ivy, Glechoma hederacea, an aromatic herb that was used for the flavouring and preservation of ale before the introduction of hops.
Origin
Late Middle English; earliest use found in Alphita. Alteration, probably after ale of hayhove.