The Collaborative International Dictionary of English v.0.48:
Gracile \Grac"ile\, Gracillent \Grac"il*lent\a. [L. gracilis, gracilentus.] Slender; thin. [Obs.] --Bailey. Syn: willowy. [1913 Webster]WordNet (r) 3.0 (2006):
gracile adj 1: slender and graceful [syn: gracile, willowy]