poster meaning and definition

POSTER noun

Definition of poster (noun)

1. a sign posted in a public place as an advertisement
   • "a poster advertised the coming attractions"
   • synonyms: bill, card, notice, placard, posting
2. someone who pastes up bills or placards on walls or billboards
   • synonyms: bill poster, bill sticker
3. a horse kept at an inn or post house for use by mail carriers or for rent to travelers
   • synonyms: post horse, post-horse