|a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.|
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
ribonuclease ri·bo·nu·cle·ase (rī'bō-n&oomacr;'klē-ās', -āz', -ny&oomacr;'-)
Any of various enzymes that catalyze the hydrolysis of RNA. Also called RNase.