(literary) they (about women or girls)

潜水艦: submarine

吹管: A blowpipe. / 推勘: An interrogation. / 水干: A kind of a kimono tunic, worn in ancient Japan. / 水患: A flood. / 水管: A water pipe, a drain.

排水管: drainpipe, drainage pipe / 配水管: conduit (pipe), water pipe

名鑑: / 明鑑: / 銘肝: / 鳴管: syrinx

everyone, one and all

(Internet slang) literally who would want this

Abbreviation of 奈良: the city of Nara / what / (obsolete) apple tree

water pipe, drain / (anatomy) siphon, a part of the mollusk body

a submarine (undersea boat)