ajonc

by attraction of jonc, derived from the Berry agon (1280), diminutive of the Old French ajou (13th century), from the northern Occitan ajo "hedge", borrowed from the Old Low Franconian haga "hedge, hedge row" (cf. Dutch haag), which is related to the German hage "grove", (Swiss) häge "enclosure, hedge", to the English haw "hawthorn", hedge "hedge". The Frankish language also gave the Franco-Provençal adje, adze "hedge".