Definitions of poster

1. someone who pastes up bills or placards on walls or billboards

2. a horse kept at an inn or post house for use by mail carriers or for rent to travelers

3. One who posts bills; a billposter.

4. One who posts, or travels expeditiously; a courier.

5. A post horse.

6. A large advertising sheet to be posted in a public place.

7. One who posts; one who travels expeditiously; a large advertising bill.

8. One who posts; a courier; a large printed bill for posting.