the principles or movement of a party of political reformers, chiefly workingmen, in England from 1838 to 1848: so called from the document (People's Charter or National Charter) that contained a statement of their principles and demands.
British Dictionary definitions for National Charter
(British history) the principles of the reform movement in Britain from 1838 to 1848, which included manhood suffrage, payment of Members of Parliament, equal electoral districts, annual parliaments, voting by ballot, and the abolition of property qualifications for MPs
Chartist, noun, adjective
named after the People's Charter, a document which stated their aims