What does British parliament mean?

The British Parliament is the governing body for the United Kingdom and Northern Ireland. It is democratically elected with an official opposition, and has two chambers- the House of Commons, which is the main law-making body and is headed by the Prime Minister, and the House of Lords, which is the Upper Chamber and needs to ratify any new Parliamentary Bills before they can become law. However, in extreme or unusual circumstances, the Commons can override the Lords to push new legislation through.