transom
/ˈtrænsəm/
noun
- A horizontal bar across the top of a door or window, or a small window above a door.
- The old house had a decorative transom above the front door.
- The transom was painted to match the door frame.
- He opened the transom to let in some fresh air.
- The flat part at the back of a boat's stern.
- The name of the ship was painted on the transom.
- He sat on the transom and watched the sunset.
- The boat's transom was reinforced for the outboard motor.