n.1 any grasslike plant of the genus Carex with triangular stems, usu. growing in wet areas.
2 an expanse of this plant.
Phrases and idioms:
sedge-warbler (or -wren) a small warbler, Acrocephalus schoenobaenus, that breeds in sedge.
Derivatives:
sedgy adj.
Etymology: OE secg f. Gmc