In some countries — Great Britain for example — the group of people who make the laws is called the parliament. It's the equivalent of Congress in the United States.
The most common meaning of parliament refers to a country's legislative (law-making) body. England's parliament is very famous. The word comes in part from the French verb parler, which means to speak, which makes sense since this group of people assemble to talk about laws and issues. Another meaning of parliament is the card game known as fan tan or sevens, where you lead with your sevens in a certain sequence and win by using up all your cards.