Source : Webster's Revised Unabridged Dictionary (1913)

Frill \Frill\, v. i. [imp. & p. p. {Frilled}; p. pr. & vb. n.
   {Frilling}.] [OF. friller, fr. L. frigidulus somewhat cold,
   dim. of frigidus cold; akin to F. frileux chilly.]
   1. To shake or shiver as with cold; as, the hawk frills.
      --Johnson.

   2. (Photog.) To wrinkle; -- said of the gelatin film.