Definition of transom
1
: a window above a door or other window built on and commonly hinged to a transom
2
: a transverse piece in a structure : crosspiece: such as
a
: lintel
b
: a horizontal crossbar in a window, over a door, or between a door and a window or fanlight above it
c
: the horizontal bar or member of a cross or gallows
d
: any of several transverse timbers or beams secured to the sternpost of a boat;
also
: the planking forming the stern of a square-ended boat
—
over the transom
: without solicitation or prior arrangement
- the manuscript arrived over the transom
