A person who is not of noble rank or birth; an ordinary person without a title. In medieval times, a commoner had fewer rights and privileges than a noble.
A member of the general public, as opposed to someone with a specific role or status. The event was open to both dignitaries and commoners alike.
A member of the House of Commons in the British Parliament. Several commoners voiced their concerns during the heated debate.
At Oxford University (historical), a student who pays for their own board and tuition, as distinguished from scholars or fellows. Unlike the scholars, the commoners were responsible for covering the full cost of their meals.