"English person who has settled in North America," 1738, from Anglo- + American. Originally often in contrast to German immigrants; later (1830s) in contrast to French-Canadians, Louisiana French, Spanish Mexicans. As an adjective from 1797, "pertaining to the English who have settled in America;" meaning "pertaining to both England and the United States" is from 1812.
anglicize
angling
Anglist
Anglo
Anglo-
Anglo-American
Anglo-French
Anglo-Indian
Anglo-Latin
Anglomania
Anglo-Norman