starflower Syllabification: (star·flow·er)Pronunciation: /ˈstärˌflou(-ə)r/Definition of starflower noun a plant with starlike flowers, in particular. a small North American woodland plant (Trientalis borealis, family Primulaceae). a star-of-Bethlehem. starflower in other Oxford dictionaries Definition of starflower in the British & World English dictionary