Definitions for "Parliamentarian"
One who adhered to the Parliament, in opposition to King Charles I.
Supporters of the Parliamentary cause against Charles I during the Civil War. They were also called roundheads, a reference to the short hair of the apprentices who demonstrated against the King at Westminster in 1641. OXFORD. In 1644 York fell to Parliamentary forces who retained the city for the remainder of the Civil War.
One versed in the rules and usages of Parliament or similar deliberative assemblies; as, an accomplished parliamentarian.
A person who advises a chairman or presiding officer about matters relating to parliamentary procedure.
an elected member of the British Parliament: a member of the House of Commons
Keywords:  pertaining
Of or pertaining to Parliament.