TRANSOM

noun Etymology: 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 Date: 14th century a transverse piece in a structure ; crosspiece : as, lintel , a horizontal crossbar in a window, over a door, or between a door and a window or fanlight above it, the horizontal bar or member of a cross or gallows, any of several transverse timbers or beams secured to the sternpost of a boat, a window above a door or other window built on and commonly hinged to a ~