In architecture, a transom is a transverse horizontal structural beam or bar, or a crosspiece separating a door from a window above it. This contrasts with a mullion, a vertical structural member. [1]

Sep 17, 2025 · On most boats, the transom is the vertical reinforcement at the stern of the boat. There’s definitely a lot of terminology to learn and remember when boating, so we’re here to tell you more …

: a window above a door or other window built on and commonly hinged to a transom

Oct 25, 2024 · The transom is structurally tied together with the keel and sides of the boat, making it an important part of the vessel’s overall design and construction. While the terms “ stern ” and “transom” …

Nov 18, 2025 · Transom windows sit over a door or other window on top of a horizontal beam, called a transom. They can be decorative or functional and have been popular since the 14th century.

Add elegance to your home with a transom window! Explore dozens of ideas, choose the look you want, and then follow simple videos to plan and install.

TRANSOM definition: a crosspiece separating a door or the like from a window or fanlight above it. See examples of transom used in a sentence.