(archaic) a structure surrounded by a moat or walls: a fortress, castle

even if one says

to live in, to inhabit, to abide at, to dwell at

ancient times, a very long time ago

once (in the indeterminate past)

the past, old times / ancient

olden days; former

a king, especially one who is not East Asian or was East Asian in pre-imperial times; in China and Vietnam, generally a king before Qin Shi Huangdi who invented the title 皇帝 (kōtei, “huangdi; emperor”); in Korea, one of the many kings before the Korean Empire which was modeled after Japan's; in Japan, one of the rulers before Emperor Jinmu

to say, to tell somebody / to call, to name, to give a name / to cry, to call, to make a noise (such as an animal)

castle