sima

from WordNet (r) 3.0 (2006)
sima
    n 1: rock that form the continuous lower layer of the earth's
         crust; rich in silicon and magnesium
    
from The Collaborative International Dictionary of English v.0.48
Sima \Si"ma\, n. (Arch.)
   A cyma.
   [1913 Webster]
    

[email protected]