bulbulPronunciation: /ˈbʊlbʊl/Definition of bulbul noun a tropical African and Asian songbird, typically having a crest, drab plumage, and a melodious voice. Family Pycnonotidae: several genera and numerous species Origin: mid 17th century: from Persian, of imitative originbulbul in other Oxford dictionaries Definition of bulbul in the US English dictionary