望ぼう火か楼ろうMeanings1nounfire lookout tower; fire watchtowerarchaicArchaic term for a tower used to watch for fires; the modern equivalent is 火の見櫓 (ひのみやぐら).See also: 火の見櫓江え戸ど時じ代だいには、町まちのあちこちに望ぼう火か楼ろうが設もうけられていた。In the Edo period, fire lookout towers were set up throughout the town.