n. A fish of the family Clupeidæ, Clupea pilchardus, resembling the herring, but thicker and rounder, with the under jaw shorter, the back more elevated, the belly less sharp, and the mouth edentulous.n. A fish, Clupea sagax, closely related to the pilchard.n. A third fish of the family Clupeidæ, Harengula macrophthalma.n. The young menhaden.n. A fish, Sardinella sagax, which visits the Australian shores periodically in large shoals: apparently the same as the Californian and Chilean pilchard, and closely related to the English pilchard, Sardinella pilchardus.