[mass noun]a soft white clay-like material consisting of hydrated magnesium silicate, found chiefly in Turkey 海泡石 ■(亦作 meerschaum pipe)[count noun]tobacco pipe with the bowl made from this 海泡石烟斗
语源
late 18th cent.: from German, literally sea-foam', from Meer 'sea' + Schaum 'foam', translation of Persian kef-i-daryā (alluding to the frothy appearance of the silicate)