noun
outlet; spillway; discharge opening
Refers to an opening or outlet for water, gas, or other substances to escape or be discharged. Often used in technical or engineering contexts.
See also: はけ口
ダムの吐き口から水が勢いよく流れ出ている。
Water is gushing out from the dam's spillway.
この装置にはガスの吐き口が二
This device has two gas outlets.
はけ口 is a more common word for 'outlet' or 'vent', often used figuratively (e.g., for emotions). 吐き口 is more literal and technical, specifically for physical discharge openings.
Compound of 吐き (haki, 'vomiting' or 'discharging', from verb 吐く haku) and 口 (kuchi, 'mouth' or 'opening').