- 1a large notice, often with a picture on it, that is put in a public place to advertise something election posters a poster campaign (= an attempt to educate people about something by using posters) a wanted poster (= with a picture of a person that the police are looking for) They put up a poster advertising the concert.
- 2a large picture that is printed on paper and put on a wall as decoration posters of her favorite movie stars
- 3a person who posts a message on a message board (= a place on a Web site where people can read or write messages)
Check pronunciation: poster