Search Result for "rottenstone": 
Wordnet 3.0

NOUN (1)

1. a weathered and decomposed siliceous limestone; in powdered form it is used in polishing;
[syn: rottenstone, tripoli]



WordNet (r) 3.0 (2006):

rottenstone
    n 1: a weathered and decomposed siliceous limestone; in powdered
         form it is used in polishing [syn: rottenstone,
         tripoli]