osier/ˈəʊzɪə/EtymologyBorrowed from French Osier, from the noun osier (“willow tree”). Also altered from Auger and Ager. Compare Losier.osier means A surname from French. Lexicurio rates it Sui generis — a strength score of 89 out of 100.nameA surname from French.nounA willow, of species Salix viminalis, growing in wet places in Europe and Asia, and introduced into North America, considered the best willow for wickerwork.Any kind of willow.Long, pliable twigs of this plant, or of other similar plants.“She pulled half a dozen fine fish out of the water within the reeds, killing each as she took it out, and threading it on a long osier that she carried. Then she knotted the osier, hung it on her arm, picked up the pitcher, and turned to come back.”