How do you spell Primrose

Available Definitions:
1)  a. - An early flowering plant of the genus Primula (P. vulgaris) closely allied to the cowslip. There are several varieties, as the white-, the red-, the yellow-flowered, etc. Formerly called also primerole, primerolles.
2)  a. - Any plant of the genus Primula.
3)  a. - Of or pertaining to the primrose; of the color of a primrose; -- hence, flowery; gay.