halberdierEnglishOxford New American Dictionaryhalberdier /ˌhalbərˈdir, , ˌhælbərˈdɪr , ˌhôlbərˈdir, ˌhɔlbərˈdɪr / ▸ noun historical a man armed with a halberd. – ORIGIN early 16th century : from French hallebardier, from hallebarde (see halberd).