1. (

• frill ,

) (paleontology) a bony plate that curves upward behind the skull of many ceratopsian dinosaurs ;

2. (

• frill ,
• ruff

) an external body part consisting of feathers or hair about the neck of a bird or other animal ;

3. (

• frill ,
• flounce ,
• ruffle ,
• furbelow

) a strip of pleated material used as a decoration or a trim ;

4. (

• folderal ,
• falderol ,
• frill ,
• gimcrackery ,
• gimcrack ,
• nonsense ,
• trumpery

) ornamental objects of no great value ;