an incident on 5 March 1770 when British soldiers shot at American colonists and killed five of them. It was called a massacre (= the killing of many people) to increase hatred for the British, and was one of the events that led to the American Revolution .
BOSTON MASSACRE
Meaning of BOSTON MASSACRE in English
Oxford guide to British and American culture English vocabulary. Руководство по британской и американской культуре, Оксфордский английский словарь. 2005