Member of Parliament

member of the lawmaking body of Great Britain

A Member of Parliament, or MP, is a representative elected by the voters to a parliament. In many countries the term applies specifically to members of the lower house, as upper houses often have a unique title, such as senate, and thus also have unique titles for its members, such as "senators". Members of parliament tend to form parliamentary parties with members of the same political party.
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Noun
1. an elected member of the British Parliament: a member of the House of Commons
(synonym) Parliamentarian
(hypernym) legislator
(member-holonym) House of Commons, British House of Commons

M.P.