frillPronunciation: /frɪl/Translate frill | into French | into German | into Italian | into Spanish Definition of frill noun 1a strip of gathered or pleated material sewn on to a garment or larger piece of material as a decorative edging or ornament. a thing resembling a frill in appearance or function:tiny frills of foam glistened white on the sea a natural fringe of feathers or hair on a bird or other animal. Palaeontology an upward-curving bony plate extending behind the skull of many ceratopsian dinosaurs. 2 (usually frills) an unnecessary extra feature or embellishment:it was just a comfortable flat with no frillsDerivatives frilled adjective Origin: late 16th century: from or related to Flemish frulfrill in other Oxford dictionaries Definition of frill in the US English dictionary