|a scrap or morsel of food left at a meal.|
|a chattering or flighty, light-headed person.|
|chitin (kīt'n) Pronunciation Key
A tough, semitransparent substance that is the main component of the exoskeletons of arthropods, such as the shells of crustaceans and the outer coverings of insects. Chitin is also found in the cell walls of certain fungi and algae. Chemically, it is a nitrogenous polysaccharide (a carbohydrate).