A light, porous, glassy lava, used in solid form as an abrasive and in powdered form as a polish and an abrasive.
An extremely porous, glassy, extrusive igneous rock typically light enough to float on water, used as an abrasive and in making soaps, polishes, etc.
To clean, polish, or smooth with pumice.
To clean, polish, etc. with pumice.
A usually light-colored, porous, lightweight rock of volcanic origin. The pores form when water vapor and gases escape from the lava during its quick solidification into rock.
Origin of pumice
Middle English from Anglo-Norman pomis from Late Latin pōmex from Latin pūmex alteration of spūma foam