n. A hydrated magnesium silicate, claylike mineral used for carving into decorative articles and smoking pipes
the GNU version of the Collaborative International Dictionary of English
n. Meerschaum. See meerschaum.
The Century Dictionary and Cyclopedia
n. The mineralogical name for the hydrous magnesium silicate meerschaum. See meerschaum.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a white clayey mineral
Word Usage
"Fuller’s earth: Major producers of fuller’s earth are the United States (attapulgite, smectite), Spain (attapulgite, sepiolite), and Senegal (attapulgite)."