n. A name common to those species of herons which have long, loose-webbed plumes, forming tufts on the head and neck, or a flowing train from the back.n. A heron's plume.n. A topknot, plume, or bunch of long feathers upon the head of a bird; a plumicorn: as, the egrets of an owl.n. Same as aigret, 2.n. In botany, the flying, feathery, or hairy down of seeds, as the down of the thistle.n. A monkey, Macacus cynomolgus, an East Indian species commonly seen in confinement.