1. The activity or condition of striving to gain or win something by defeating or establishing superiority over others.
2. An event or contest in which people take part in order to establish superiority or supremacy in a particular area.
3. The person or people over whom one is attempting to establish one's supremacy or superiority; the opposition.
Plural noun: Competitions.
1. I walked round to check out the competition.
2. There is a beauty competition.