noun
waste-water port; freeing port
Technical term for an outlet that discharges water from a dam, sewer, or ship's deck.
ダムの放水口から大量の水が放出された。
A large amount of water was released from the dam's waste-water port.
船の放水口から海水が排水される。
Seawater is drained from the ship's freeing port.
noun
firefighting water outlet
Specifically an outlet for connecting fire hoses, often found in buildings or public facilities.
消防隊はビルの放水口にホースを接続した。
The fire brigade connected a hose to the building's water outlet.