What does "frill" mean?

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

Additional senses

  1. 2.To provide or decorate with a frill or frills; to turn back. in crimped plaits; as, to frill a cap.
  2. 3.(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.
  3. 4.A border or edging secured at one edge and left free at the other, usually fluted or crimped like a very narrow flounce.

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