Topic: BUILDINGS
| Date: | 1300-1400 |
| Origin: | Probably from Latin transtrum, from trans 'across' |
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tran‧som
[countable]
[countable]1 a bar of wood that forms the top of the back part of a boat
2TBB a bar of wood or stone which separates a door from a window above it, or which divides a window into two parts
3 American EnglishTBB a small window over a door or over a larger window [= fanlight British English]
