Centennial State

from WordNet (r) 3.0 (2006)
Centennial State
    n 1: a state in west central United States in the Rocky
         Mountains [syn: {Colorado}, {Centennial State}, {CO}]
    
from The Collaborative International Dictionary of English v.0.48
Centennial State \Centennial State\
   Colorado; -- a nickname alluding to the fact that it was
   admitted to the Union in the centennial year, 1876.
   [Webster 1913 Suppl.]
    

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