Definition of 'great white heron'

Noun

1. a common egret of the genus Egretta found in America; it is a variety of the Old World white egret Casmerodius albus
      Synonyms: American egret Egretta albus
2. widely distributed Old World white egret
      Synonyms: Casmerodius albus
3. large white heron of Florida and the Florida Keys
      Synonyms: Ardea occidentalis

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