a mineral, hydrous magnesium silicate, H 4 Mg 2 Si 3 O 10 , occurring in white, claylike masses, used for ornamental carvings, for pipe bowls, etc.; sepiolite.
2.
a tobacco pipe with a bowl made of this substance.
Origin: 1775–85; < GermanMeerschaum, equivalent to Meer sea (see mere2) + Schaum foam
Also called: sepiolite a white, yellowish, or pink compact earthy mineral consisting of hydrated magnesium silicate: used to make tobacco pipes and as a building stone. Formula: Mg2Si3O6(OH)4
1789, "tobacco pipe with a bowl made of meerschaum," a type of soft white clay, from Ger., lit. "sea-foam," so called from its frothy appearance, translation of L. spuma maris, from Pers. kef-i-darya.