Meaning of mackerel gull in English:

mackerel gull

noun

  • 1US (chiefly New England regional), the black-headed gull, Larus ridibundus.

  • 2US (chiefly New England regional), a tern.

  • 3The razorbill, Alca torda.

Origin

Late 18th century; earliest use found in Jeremy Belknap (1744–1798), Congregationalist minister in America and historian.