What does poster mean?

poster

Plural: posters

Definition

A large printed sheet displayed on a wall or board to advertise something or show a picture, such as a film advertisement.

That poster says Friday, but the ticket office told me Thursday.
That poster says Friday, but the ticket office told me Thursday.
Please straighten the poster beside the entrance before we open.
Please straighten the poster beside the entrance before we open.
They were giving away posters after the screening, so my sister took one home.
They were giving away posters after the screening, so my sister took one home.