From Longman Dictionary of Contemporary Englishazureaz‧ure /ˈæʒə, ˈæʒjʊə, ˈæzjʊə $ ˈæʒər/ adjective CChaving a bright blue colour like the sky —azure noun [uncountable]
Examples from the Corpus
azure• No wisteria cooing like fat blue pigeons from the eaves, no azure sea, no pretty boats bobbing on gentle waves.Origin azure (1200-1300) Old French azur, probably from Old Spanish, from Arabic lazaward, from Persian lazhuward 