Definition of evening primrose
: any of several dicotyledonous plants of a family (Onagraceae, the evening-primrose family) and especially of the type genus (Oenothera); especially : a coarse biennial herb (O. biennis) of North America with yellow flowers that open in the evening
First Known Use of evening primrose
Learn More about evening primrose
Britannica.com: Encyclopedia article about "evening primrose"
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