sugarbirdPronunciation: /ˈʃʊgəbəːd/Definition of sugarbird noun 1a southern African songbird with a long, fine bill and very long tail, feeding on nectar and insects. Genus Promerops, family Promeropidae (or Meliphagidae): two species 2West Indiananother term for bananaquit.sugarbird in other Oxford dictionaries Definition of sugarbird in the US English dictionary