(Science: zoology) One of various species of fishes of the genus Clupea, and allied genera, especially. The common round or english herring (c. Harengus) of the North atlantic. Herrings move in vast schools, coming in spring to the shores of Europe and America, where they are salted and smoked in great quantities. Herring gull The chimaera (c. Monstrosa) which follows the schools of herring. See Chimaera. The opah.