<p><strong>Noun</strong></p><ul><li>One of the divisions of a window or the like, consisting of a single plate of glass in a frame.</li><li>A plate of glass for such a division.</li><li>A panel, as of a wainscot, ceiling, door, etc.</li><li>A flat section, side, or surface, as one of the sides of a bolthead.</li><li>Philately. A sheet of stamps or any large portion of one, as a half or a quarter, as issued by the post office.</li></ul>