The Collaborative International Dictionary
Enothera biennis
Primrose \Prim"rose`\, n. [OE. primerole, F. primerole, a derivative fr. LL. primula, from L. primus first. See Prime, a.] (Bot.)
An early flowering plant of the genus Primula ( Primula vulgaris) closely allied to the cowslip. There are several varieties, as the white-, the red-, the yellow-flowered, etc. Formerly called also primerole, primerolles.
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Any plant of the genus Primula.
Evening primrose, an erect biennial herb ( Enothera biennis), with yellow vespertine flowers, common in the United States. The name is sometimes extended to other species of the same genus.
Primrose peerless, the two-flowered Narcissus ( Narcissus biflorus). [Obs.]