Definitions
1.NounA crosspiece over a door; a lintel.
2.NounA horizontal glazing bar in a window.
3.NounA transom window.
4.NounAny of several transverse structural members in a ship, especially at the stern; a thwart.
5.NounThe flat or nearly flat stern of a boat or ship.a ship's transom (flat stern)
6.NounThe horizontal beam on a cross or gallows.
7.NounItems that have arrived over the transom."We are overwhelmed with transom resumes.; They only met the deadline by working most of the night and making a transom filing."