transoms

1.(车辆等的)横梁;船尾肋板;【军】(炮车尾部)横梁;【建】(门,窗的)横档;〈美〉气窗,楣窗

1.a small window over a door or larger window. The British word is fanlight.

2.a bar of wood or stone across a window that divides the window into two parts; a bar of wood or stone across the top of a door that separates the door from the window above it