bluebonnet

from WordNet (r) 3.0 (2006)
bluebonnet
    n 1: low-growing annual herb of southwestern United States
         (Texas) having silky foliage and blue flowers; a leading
         cause of livestock poisoning in the southwestern United
         States [syn: {bluebonnet}, {buffalo clover}, {Texas
         bluebonnet}, {Lupinus subcarnosus}]
    2: a brimless dark blue Scottish cap with a flat top and a plume
       on one side [syn: {Balmoral}, {bluebonnet}]
    
from The Collaborative International Dictionary of English v.0.48
Blue bonnet \Blue" bon`net\ or Blue-bonnet \Blue"-bon`net\, n.
   1. A broad, flat Scottish cap of blue woolen, or one wearing
      such cap; a Scotchman.
      [1913 Webster]

   2. (Bot.) A plant. Same as {Bluebottle}.
      [1913 Webster]

   3. (Zool.) The European blue titmouse ({Parus c[oe]ruleus});
      the bluecap.
      [1913 Webster]
    

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