Poster/ˈpəʊstər/ Definition 1 of 3Pro Tip 1/3Cultural Events Posters often promote movies, concerts, or events and reflect cultural trends. The 'Star Wars' poster became an iconic piece of history. Pro Tip 2/3Visual Impact Design and colors on a poster grab attention and convey messages quickly. The bright colors on the festival poster caught everyone's eye. Pro Tip 3/3Advertising Posters are tools for advertising, meant to persuade or inform an audience. The restaurant's new poster advertised the grand opening special.