a plant, Oenothera biennis, having yellow flowers that open at nightfall.
any of various plants of the same or related genera.
Origin of evening primrose
First recorded in 1800–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for evening primrose
Historical Examples of evening primrose
In another locality I might have brought him dwarf cornel, or the houstonia, or wood-sorrel, or the evening-primrose.Under the Maples
any onagraceous plant of the genus Oenothera, native to North America but widely cultivated and naturalized, typically having yellow flowers that open in the evening
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012