Wordnet 3.0
NOUN (1)
1. 
 an Eskimo hut; 
 usually built of blocks (of sod or snow) in the shape of a dome; 
[syn: igloo, iglu]
WordNet (r) 3.0 (2006):
iglu
    n 1: an Eskimo hut; usually built of blocks (of sod or snow) in
         the shape of a dome [syn: igloo, iglu]