Real Dictionary

heather
uncountable noun: Heather is a low, spreading plant with small purple, pink, or white flowers. Heather grows wild in Europe on high land with poor soil.

Heather in American English
a feminine name
any of various low-growing plants of the heath family; esp., a plant (Calluna vulgaris) common in the British Isles, with scalelike leaves and stalks of small, bell-shaped, purplish-pink flowers
like heather in color or appearance
adjective: subtly flecked or mottled
noun: a female given name
noun: any of various heaths, esp Calluna vulgaris, of England and Scotland, having small, pinkish-purple flowers

heather in British English
adjective: of a heather colour
noun: a low-growing evergreen Eurasian ericaceous shrub, Calluna vulgaris, that grows in dense masses on open ground and has clusters of small bell-shaped typically pinkish-purple flowers