1chiefly British an area of open uncultivated land, typically on acid sandy soil, with characteristic vegetation of heather, gorse, and coarse grasses:horses were being exercised on the heath [mass noun]:the marshland gave way to heath and sandy scrub
[mass noun] Ecology vegetation dominated by dwarf shrubs of the heather family: [as modifier]:heath vegetation
2a dwarf shrub with small leathery leaves and small pink or purple bell-shaped flowers, characteristic of heaths and moorland.
Erica and related genera, family Ericaceae: many species
3a small light brown and orange European butterfly which typically has eyespots on the wings, the caterpillar feeding on grasses.
Genus Coenonympha, subfamily Satyrinae, family Nymphalidae: several species, including the common small heath (C. pamphilus)
4a yellowish-brown chiefly day-flying European moth of heathland and grassland.
Several species in the family Geometridae
Old Englishhǣth, of Germanic origin; related to Dutch heide and German Heide