6 letters · 12 points in Scrabble
noun a light glass formed on the surface of some lavas; used as an abrasive
verb rub with pumice, in order to clean or to smoothen
originFrom Anglo-Norman and Old French pomis (“pumice stone”), from Latin pūmex (“pumice stone”). Doublet of pounce.
Etymology from Wiktionary, CC BY-SA 3.0