Source : Webster's Revised Unabridged Dictionary (1913)

Liqueur \Li`queur"\ (l[-e]`k[~e]r"), n. [F. See {Liquor}.]
   An aromatic alcoholic cordial.

   Note: Some liqueurs are prepared by infusing certain woods,
         fruits, or flowers, in either water or alcohol, and
         adding sugar, etc. Others are distilled from aromatic
         or flavoring agents.

Source : WordNet®

liqueur
     n : strong highly flavored sweet liquor usually drunk after a
         meal [syn: {cordial}]