To shake or shiver as with cold; as, the hawk frills.

To wrinkle; – said of the gelatin film.

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

A ruffing of a bird’s feathers from cold.

A ruffle, consisting of a fold of membrane, of hairs, or
of feathers, around the neck of an animal.

A similar ruffle around the legs or other appendages of
animals.

A border or edging secured at one edge and left free at
the other, usually fluted or crimped like a very narrow flounce.