<p><strong>Noun</strong></p><ul><li>a crosspiece separating a door or the like from a window or fanlight above it.</li><li>Also called transom light, a window above such a crosspiece.</li><li>a crossbar of wood or stone, dividing a window horizontally.</li><li>a window so divided.</li><li>Nautical: a flat termination to a stern, above the water line.</li><li>framework running athwartships in way of the sternpost of a steel or iron vessel, used as a support for the frames of the counter.</li><li>Artillery: a metal piece connecting the sidepieces of the tail or the cheeks of a gun carriage.</li></ul>