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transom

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

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

OTHER WORDS FROM transom

transomed, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use transom in a sentence

British Dictionary definitions for transom

transom
/ (ˈtrænsəm) /

noun
Also called: traverse a horizontal member across a windowCompare mullion
a horizontal member that separates a door from a window over it
the usual US name for fanlight
nautical
  1. a surface forming the stern of a vessel, either vertical or canted either forwards (reverse transom) or aft at the upper side
  2. any of several transverse beams used for strengthening the stern of a vessel

Derived forms of transom

transomed, adjective

Word Origin for transom

C14: earlier traversayn, from Old French traversin, from traverse
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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