Weaver bird (Zoöl.), any one of numerous species of Asiatic, Fast Indian, and African birds belonging to Ploceus and allied genera of the family Ploceidæ. Weaver birds resemble finches and sparrows in size, colors, and shape of the bill. They construct pensile nests composed of interlaced grass and other similar materials. In some of the species the nest is retort-shaped, with the opening at the bottom of the tube. -- Weavers' shuttle (Zoöl.), an East Indian marine univalve shell (Radius volva); -- so called from its shape. See Illust. of Shuttle shell, under Shuttle.