edelweiss

from WordNet (r) 3.0 (2006)

edelweiss
    n 1: alpine perennial plant native to Europe having leaves
         covered with whitish down and small flower heads held in
         stars of glistening whitish bracts [syn: {edelweiss},
         {Leontopodium alpinum}]

from The Collaborative International Dictionary of English v.0.48

Edelweiss \E"del*weiss\, n. [G., fr. edel noble + weiss white.]
   (Bot.)
   A little, perennial, white, woolly plant ({Leontopodium
   alpinum}), growing at high elevations in the Alps. It is the
   national flower of Austria.
   [1913 Webster +PJC]