IPA: /ˈpoʊstər/
KK: /ˈpoʊstər/
A large printed picture or notice that is displayed on a wall or board to promote something or provide information.
The movie poster was hung in the theater to attract more viewers.
Poster → It is formed from 'post-' (from Latin 'postis', meaning door or post) and '-er' (meaning a person or thing that performs an action). The word 'poster' refers to a thing that is placed or affixed, often on a wall or post, to convey information or advertisement.
Think of something that is 'placed' ('post-') on a wall to share information — that's what a poster does.