Main Entry: day·flow·er

Pronunciation: \ˈdā-ˌflau̇(-ə)r\

Function: noun

Date: circa 1688

: any of a genus (Commelina) of herbs of the spiderwort family having one petal smaller than the other two; especially : a blue-flowered Asian herb (C. communis) with the smaller petal white that has become naturalized as a weed in the United States