noun day·flow·er \ˈdā-ˌflau̇(-ə)r\

Definition of dayflower

  1. :  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 U.S.

Circa 1688

First Known Use of dayflower

circa 1688

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