Source : Webster's Revised Unabridged Dictionary (1913)

Cologne \Co*logne"\, n. [Originally made in Cologne, the French
   name of K["o]ln, a city in Germany.]
   A perfumed liquid, composed of alcohol and certain aromatic
   oils, used in the toilet; -- called also {cologne water} and
   {eau de cologne}.

Source : WordNet®

cologne water
     n : a perfumed liquid made of essential oils and alcohol [syn: {cologne},
          {eau de cologne}]