A four-poster bed, which has four high posts, one at each corner, supporting a canopy.

(Internet) One who top-posts.

plural of poster child

A printed public announcement that the authorities want to apprehend a person for a crime; normally, a reward is offered.

plural of poster paint

A tempera paint, often with a type of gum-water or glue size as its binder, and sometimes supplied in powdered form.

plural of poster boy

(philately, advertising) A label, resembling a postage stamp, issued to advertise or commemorate a product or event.

plural of poster stamp

plural of poster girl