tran·som

[tran-suhm]
noun
1.
a crosspiece separating a door or the like from a window or fanlight above it.
2.
Also called transom light, transom window. a window above such a crosspiece.
3.
a crossbar of wood or stone, dividing a window horizontally.
4.
a window so divided.
5.
Nautical.
a.
a flat termination to a stern, above the water line.
b.
framework running athwartships in way of the sternpost of a steel or iron vessel, used as a support for the frames of the counter.
6.
Artillery. a metal piece connecting the sidepieces of the tail or the cheeks of a gun carriage.

Origin:
1325–75; late Middle English traunsum, traunsom, Middle English transyn, probably alteration (by association with trans-) of traversayn < Old French traversin crosspiece, derivative of travers breadth; see traverse

tran·somed, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To transom
00:10
Transom is always a great word to know.
So is zedonk. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
the offspring of a zebra and a donkey.
Collins
World English Dictionary
transom (ˈtrænsəm) [Click for IPA pronunciation guide]
 
n
1.  Compare mullion Also called: traverse a horizontal member across a window
2.  a horizontal member that separates a door from a window over it
3.  the usual US name for fanlight
4.  nautical
 a.  a surface forming the stern of a vessel, either vertical or canted either forwards (reverse transom) or aft at the upper side
 b.  any of several transverse beams used for strengthening the stern of a vessel
 
[C14: earlier traversayn, from Old French traversin, from traverse]
 
'transomed
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

transom
1388, transeyn "crossbeam spanning an opening, lintel," probably by dissimilation from L. transtrum "crossbeam" (especially one spanning an opening), from trans- "across" + instrumental suffix -trum. Meaning "small window over a door or other window" is first recorded 1844.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
The door is framed with a paneled soffit and jamb, flaking sidelights of three
  lights over panels, and an eight-light transom.
The right side façade has a single six-paneled door with a four-paned transom.
The transom windows are opened and exist to bring natural light in over the
  rigid canopy.
Awesome family room with transom windows leading to an oversized deck.
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