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day·flow·er | \ ˈdā-ˌflau̇(-ə)r 
\
\Definition of dayflower
: 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.
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Time Traveler for dayflower
The first known use of dayflower was circa 1688
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