楼橹 lóulǔ watchtower Origin Definitions Defs Strokes Stroke Words Sentences Sents 楼 樓 lóu superstructure tower-like structure atop a building or city wall, such as a gate tower or watchtower橹 櫓 lǔ watchtower (bound form) An open watchtower or turret on top of a city wall used for observation during a defense