It's synonymous with . . . ( cha-chaan ) 'machurro non machorro, is a tree' 128561; , and that's why I don't link it; I define this here. It is the same papaya, but there is one of female flowers, another of hermaphrodites and this male flower, which usually bears no fruits, and when it does are of very low quality. In short, 'male papayo' is told to the "papaya of male flowers".
