dripstone

from WordNet (r) 3.0 (2006)

dripstone
    n 1: the form of calcium carbonate found in stalactites and
         stalagmites
    2: a protective drip that is made of stone [syn: {dripstone},
       {hoodmold}, {hoodmould}]

from The Collaborative International Dictionary of English v.0.48

Dripstone \Drip"stone`\, n. (Arch.)
   A drip, when made of stone. See {Drip}, 2.
   [1913 Webster]

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