1. 横梁：transmission network 输电网 | transom 横梁 | transport 运输
2. 气窗：transom window 气窗 | transom 气窗 | transonic barrier 音障
3. 门窗横挡：translational failure 滑动式崩塌 | transom 门窗横挡 | transom window 门头气窗
4. 艉横板：292 传动,传递,输送 transmission | 293 艉横板 transom | 294 平艉 transom stern
noun
1. a horizontal crosspiece across a window or separating a door from a window over it
Synonym: traverse
2. a window above a door that is usually hinged to a horizontal crosspiece over the door
Synonym: transom window fanlight