main island of New York City, from Dutch, from a native name, perhaps representing a Delaware (Algonquian) source akin to Munsee munahan "island." Bright favors Munsee /e:nta menahahte:nk/ "where one gathers bows." As the name of a cocktail made of vermouth, whiskey, and a dash of bitters, it is attested from 1890 (in Manhattan cocktail).
