\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.

\Frill\, v. t.
To provide or decorate with a frill or frills; to turn back.
in crimped plaits; as, to frill a cap.

\Frill\, n. [See {Frill}, v. i.]. (Zo["o]l.)
(a) A ruffing of a bird's feathers from cold.
(b) A ruffle, consisting of a fold of membrane, of hairs, or
    of feathers, around the neck of an animal. See {Frilled
    lizard} (below).
(c) A similar ruffle around the legs or other appendages of
    animals.
(d) A ruffled varex or fold on certain shells.
2. A border or edging secured at one edge and left free at
   the other, usually fluted or crimped like a very narrow
   flounce.