HyperDic

English > 1 sense of the expression fuller's earth:
NOUNsubstancefuller's earthan absorbent soil resembling clay
English > fuller's earth: 1 sense > noun 1, substance
MeaningAn absorbent soil resembling clay; used in fulling (shrinking and thickening) woolen cloth and as an adsorbent.
Broadersoil, dirtThe part of the earth's surface consisting of humus and disintegrated rock