|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.|
alkyl al·kyl (āl'kəl)
A monovalent radical, such as ethyl or propyl, having the general formula CnH2n+1.
|alkyl (āl'kəl) Pronunciation Key
A radical that has the general formula CnH2n+1, formed by removing a hydrogen atom from an alkane. Ethyl and propyl are alkyls.