Learn how to say Poster correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word poster:
1a large printed picture used for decoration.
a large printed picture, notice, or advertisement displayed in a public place:
a poster campaign
2a person who posts a message on an Internet message board or blog.
[no object] (usually as noun postering)
put up posters in an area:
illegal postering in downtown Montreal
she defied police advice and postered her neighbourhood