Source : Webster's Revised Unabridged Dictionary (1913)

Gracile \Grac"ile\, Gracillent \Grac"il*lent\a. [L. gracilis,
   gracilentus.]
   Slender; thin. [Obs.] --Bailey.

Source : WordNet®

gracile
     adj : slender and graceful [syn: {willowy}]