Search Result for "onion dome":
Wordnet 3.0

NOUN (1)

1. a dome that is shaped like a bulb; characteristic of Russian and Byzantine church architecture; 



The Collaborative International Dictionary of English v.0.48:

onion dome \on`ion dome"\, n. (Architecture)
   A dome with a pointed top, its width often extending beyond
   the width of the tower it covers; -- a style of architecture
   characteristic of Russian Orthodox churches.
   [PJC]


WordNet (r) 3.0 (2006):

onion dome
    n 1: a dome that is shaped like a bulb; characteristic of
         Russian and Byzantine church architecture