<p>A bollard light is a type of outdoor lighting encased in a vertical post at ground level. The term bollard refers to the shape of the vertical post in which the light is enclosed. It comes from the nautical term, <em>bollard</em>, which is the name of the post to which ships tie up to on a dock or wharf. In keeping with its sailing origins, bollards are traditionally cylindrical and rounded at the top. However, today's bollard lighting can be cylindrical, square or any other basically vertical shape that is used to house outdoor lights.</p>