Her Majesty the Queen; the official title of the queen of the United Kingdom of Great Britain and Northern Ireland. The Queen is the official head of state of Britain and of other countries in the commonwealth, but has little real political power. She has to give her official agreement (Royal Assent) to all new laws before they can actually become laws but in fact she does not have the right to refuse this agreement.
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.
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