transom
Meaning
a horizontal bar of wood or stone across the top of a door or window.
a horizontal beam across the stern of a boat.
a window placed above the crosspiece of a door or larger window.
Usage
light streamed into the hallway through the fanlight above the transom.
the sailor leaned against the transom at the stern of the boat.
they installed a new transom window to improve ventilation in the room.
Etymology
The word "transom" entered English in the late 14th century from the Old French "traversin," meaning a crossbeam, which itself derived from the Latin "transtrum," meaning a crossbeam, especially in a ship. This Latin term is related to "trans," meaning "across," reflecting the beam's function of lying across a structure. Over time, its meaning specialized in English to refer to the crossbar over a door or window, and later to the small window above it, maintaining the core concept of a transverse element.
Analysis
The word is a simplex form derived as a whole from Latin.