a pipe with a bowl made of this
Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by
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Word origin of 'meerschaum'Ger, lit., sea foam (< meer, sea + schaum, foam), transl. of ML spuma maris, orig. used of coral, calque of Gr halos hachnē: name transferred in 18th-c. Ger to a variety of lithomarge