Definition of mew gull in US English:

mew gull

noun

North American
  • A migratory gull with greenish-gray legs, found locally in northern and eastern Eurasia and northwestern North America.

    Larus canus, family Laridae

    • ‘The most common are the glaucous-winged gulls, mew gulls, black-legged kittiwakes, and Bonaparte's gulls.’
    • ‘Herring gulls can be separated from mew gulls by their larger size, pink legs, and larger bill with a subterminal red spot.’
    • ‘Other gulls in the area are mew gulls, ring-billed gulls, western gulls, and California gulls, Bonaparte gulls, Sabine's, Thayer's, and Franklin gulls.’
    • ‘Dainty mew gulls and the even smaller Bonaparte's were the most numerous gulls in this mixed bag.’

Origin

Mid 19th century: mew (in Old English meau ‘mew gull’), of Germanic origin; related to Dutch meeuw and German Möwe.