fuller's earth

fuller's earth

noun

Definition of FULLER'S EARTH

: an earthy substance that consists chiefly of clay mineral but lacks plasticity and that is used as an adsorbent, a filter medium, and a carrier for catalysts

Origin of FULLER'S EARTH

¹fuller; from its earlier use as fulling agent

First Known Use: 15th century

Rhymes with FULLER'S EARTH

afterbirth, down-to-earth, Moray Firth, pennyworth, virgin birth, wrongful birth