A layer of gravel, sand, or other material through which liquid is passed in order to remove impurities; also, a pond or tank containing such a layer.

plural of bed wench

(historical) A low-status concubine, often a slave or captive. / (African-American Vernacular, slang, derogatory, offensive) A black woman who dates white people, often accused of seeking privileges.

(historical) A kind of early sofa-bed, one that can be converted into a bench when not in use.

plural of settle bed

plural of bed of down

Synonym of bed of roses (“pleasant or easy situation”)

(horticulture) A hotbed made of spent bark.

plural of chair bed

plural of filter bed