Merriam-Webster Collegiate Dictionary - herring gull

 noun  Date: 1857 a common large gull (Larus argentatus) of the northern hemisphere that as an adult is largely white with a gray mantle, dark wing tips, pink feet, and yellow bill HERRING  noun  (plural ~ or ~s)  Etymology: Middle English hering, from Old English h?ring; akin to Old High German harinc ~  Date: before 12th century  1. either of two food fishes (genus Clupeus):  a. one (C. harengus) that is abundant in the temperate and colder parts of the North Atlantic and that in the adult state is preserved by smoking or salting and in the young state is extensively canned and sold as sardines  b. one (C. pallasi syn. C. h. pallasi) of the North Pacific harvested especially for its roe  2. any of a large family (Clupeidae) of soft-finned bony fishes (as the ~s, shads, sardines, and menhadens) that have a laterally compressed body and a forked tail and usually occur in schools