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