greenbottle Syllabification: (green·bot·tle)Pronunciation: /ˈgrēnˌbätl/Definition of greenbottle noun a metallic green fly that sometimes lays eggs in wounds on sheep or other animals. Genus Lucilia, family Calliphoridae: several species, in particular the common L. caesar greenbottle in other Oxford dictionaries Definition of greenbottle in the British & World English dictionary