party

noun:a social gathering of people for entertainment and celebration
- We're having a party to celebrate her birthday.
noun:an organization of people with particular political beliefs that competes in elections
- He is a member of the ruling political party.
noun:a person or group of people forming one side in an agreement or dispute
- If the agreement no longer benefits a single party that agreement should end.
verb:to enjoy oneself at a party or other lively gathering, typically with drinking and dancing
- They decided to party all night long after their exams were over.