1To pour a liquid into a container, as when filling a cup or glass with water or tea.
熱いお湯を急須に注いでお茶を入れた。
I poured hot water into the teapot to make tea.
彼はビールをグラスにゆっくり注いだ。
He slowly poured beer into the glass.
スープを器に注いでからパセリを散らした。
After pouring the soup into the bowl, I sprinkled parsley on top.
子供がジュースをコップに注ごうとしてこぼしてしまった。
The child tried to pour juice into the cup and spilled it.
2To sprinkle or pour something onto a surface from above; also used for watering plants.
毎朝、庭の植木に水を注いでいる。
Every morning I water the plants in the garden.
パスタにオリーブオイルを軽く注いで仕上げた。
I finished the pasta by lightly drizzling olive oil over it.
消防士はホースで火に水を注いだ。
The firefighter sprayed water onto the fire with a hose.
3To shed tears; a somewhat literary or poetic way of describing crying.
遺族は棺の前で涙を注いだ。
The bereaved family shed tears in front of the coffin.
彼女は再会の喜びに涙を注いだ。
Overjoyed at the reunion, she shed tears.
4To devote or concentrate one's energy, attention, or funds on something, as in '全力を注ぐ' (to pour in all one's effort).
監督はこの映画に情熱を注いだ。
The director poured his passion into this film.
政府は教育に多額の予算を注ぐことを決めた。
The government decided to pour a large budget into education.
彼女はステージの彼に熱い視線を注いだ。
She fixed her ardent gaze on him on stage.
5For a river or stream to flow into a lake, sea, or other body of water.
この川は最終的に太平洋に注ぐ。
This river ultimately flows into the Pacific Ocean.
雪解け水が谷を下って湖に注いでいる。
Meltwater runs down the valley and flows into the lake.
6For rain, snow, or sunlight to pour or beat down intensely; often used as '降り注ぐ'.
真夏の太陽が容赦なく注いでいた。
The midsummer sun was beating down mercilessly.
台風の夜、激しい雨が屋根に注いだ。
On the night of the typhoon, heavy rain poured down on the roof.