noun
suction inlet; intake port; sink opening
Refers to an opening through which air, liquid, or other substances are drawn in, such as on a vacuum cleaner, pump, or sink.
掃除機の吸い込み口にゴミが詰まった。
The vacuum cleaner's suction inlet got clogged with debris.
このポンプの吸い込み口は直径5センチです。
The intake port of this pump is 5 centimeters in diameter.
Compound of 吸い込み (suction, intake) + 口 (mouth, opening).