heath (n.)

Old English hæð "untilled land, tract of wasteland," especially flat, shrubby, desolate land;" earlier "heather, plants and shrubs found on heaths," influenced by cognate Old Norse heiðr "heath, moor," both from Proto-Germanic *haithiz (source also of Old Saxon hetha, Old High German heida "heather," Dutch heide "heath," Gothic haiþi "field"), from PIE *kaito "forest, uncultivated land" (source also of Old Irish ciad, Welsh coed, Breton coet "wood, forest").