Webster 1913 Edition
[Probably fr. L.
transtruma crossbeam, transom, from
A horizontal crossbar in a window, over a door, or between a door and a window above it. Transom is the horizontal, as mullion is the vertical, bar across an opening. See Illust. of
One of the principal transverse timbers of the stern, bolted to the sternpost and giving shape to the stern structure; – called also
The piece of wood or iron connecting the cheeks of some gun carriages.
The vane of a cross-staff.
One of the crossbeams connecting the side frames of a truck with each other.
knees bolted to the transoms and after timbers.–
A window divided horizontally by a transom or transoms.
A window over a door, with a transom between.
Webster 1828 Edition
1.A beam or timber extended across the stern-post of a ship, to strengthen the aft-part and give it due form.
2.In architecture, the piece that is framed across a double light window; or a lintel over a door; the vane of a cross-staff.