frilling

from The Collaborative International Dictionary of English v.0.48

frill \frill\ (fr[i^]l), v. i. [imp. & p. p. {frilled}
   (fr[i^]ld); 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.
      [1913 Webster]

   2. (Photog.) To wrinkle; -- said of the gelatin film.
      [1913 Webster]