Silva

from WordNet (r) 3.0 (2006)

silva
    n 1: the forest trees growing in a country or region [syn:
         {silva}, {sylva}]

from The Collaborative International Dictionary of English v.0.48

Silva \Sil"va\, n.; pl. E. {Silvas}, L. {Silvae}. [L., properly,
   a wood, forest.] [Written also {sylva}.] (Bot.)
   (a) The forest trees of a region or country, considered
       collectively.
   (b) A description or history of the forest trees of a
       country.
       [1913 Webster]

from U.S. Gazetteer (1990)

Silva, MO
  Zip code(s): 63964