·noun A post horse.
II. Poster ·noun One who posts bills; a billposter.
III. Poster ·noun One who posts, or travels expeditiously; a courier.
IV. Poster ·noun A large bill or placard intended to be posted in public places.
poster, v. posterus. ...
A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
·noun A large bedstead with tall posts at the corners to support curtains. ...
Webster's Dictionary of the English Language