Definition of frill

• v. i. - To shake or shiver as with cold; as, the hawk frills.
• v. i. - To wrinkle; -- said of the gelatin film.
• v. t. - To provide or decorate with a frill or frills; to turn back. in crimped plaits; as, to frill a cap.
• v. i. - A ruffing of a bird's feathers from cold.
• v. i. - A ruffle, consisting of a fold of membrane, of hairs, or of feathers, around the neck of an animal.
• v. i. - A similar ruffle around the legs or other appendages of animals.
• v. i. - A ruffled varex or fold on certain shells.
• v. i. - A border or edging secured at one edge and left free at the other, usually fluted or crimped like a very narrow flounce.