bitterns From WikiWord, the free dictionary English Contents DefinitionsRelated wordsReferences DefinitionsnounSeveral bird species in the Botaurinae subfamily of the heron family Ardeidae. Related wordsSynonymsbotaurusgenus botaurusgenus ixobrychusixobrychuslapwingsavocetscurlewsredshankskylarkskingfishersmarsh harriergreenshankrazorbillsdickcisseloystercatchersbobolinks References Wiktionary — bitterns Wikipedia — bitterns