noun tran·som \ˈtran(t)-səm\

: a small window that is above a door or larger window

: a stone or wooden bar that goes across the top of a door or window

Full Definition of TRANSOM

:  a transverse piece in a structure :  crosspiece: 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
:  a window above a door or other window built on and commonly hinged to a transom
over the transom
:  without solicitation or prior arrangement <the manuscript arrived over the transom>

Illustration of TRANSOM

Origin of TRANSOM

Middle English transyn, traunsom, probably alteration of traversayn, from Middle French travessain, from Old French traversain set crosswise, from Vulgar Latin *traversanus, from Latin transversus transverse
First Known Use: 14th century

Other Building Terms

batten, cistern, hearth, lath, wainscot

Rhymes with TRANSOM

TRANSOM Defined for Kids


noun tran·som \ˈtran-səm\

Definition of TRANSOM for Kids

:  a piece that lies crosswise in a structure (as in the frame of a window or of a door that has a window above it)
:  a window above a door or another window


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