Source : Webster's Revised Unabridged Dictionary (1913)

Demoiselle \De`moi`selle"\, n. [F. See {Damsel}.]
   1. A young lady; a damsel; a lady's maid.

   2. (Zo["o]l.) The Numidian crane ({Anthropoides virgo}); --
      so called on account of the grace and symmetry of its form
      and movements.

   3. (Zo["o]l.) A beautiful, small dragon fly of the genus
      {Agrion}.

Source : WordNet®

demoiselle
     n 1: a young unmarried woman [syn: {damsel}, {damoiselle}, {damosel},
           {damozel}]
     2: small brilliantly colored tropical marine fishes of coral
        reefs [syn: {damselfish}]