Search Result for "fireclay": 
Wordnet 3.0

NOUN (1)

1. a heat-resistant clay; 



The Collaborative International Dictionary of English v.0.48:

fireclay \fireclay\ n.
   a heat-resistant clay.
   [WordNet 1.5]


WordNet (r) 3.0 (2006):

fireclay
    n 1: a heat-resistant clay