To pour (into) — to put a liquid into a container.
コップに水を注ぐ。
Pour water into the glass.
グラスにワインを注いでください。
Please pour wine into the glass.
店員は紅茶にミルクを注いだ。
The clerk poured milk into the tea.
To sprinkle on/from above; to water (plants); to pour onto or spray over.
朝、庭の花に水を注いだ。
In the morning I watered the flowers in the garden.
仕上げにソースを上から注いでください。
Pour the sauce on top as a finishing touch.
料理に香草を注いで風味を加えた。
Herbs were sprinkled over the dish to add flavor.
To shed (tears). (Somewhat literary/poetic usage.)
映画を見て彼女は涙をそそいだ。
She shed tears watching the movie.
感動のあまり、観客は涙を注いだ。
Moved to tears, the audience shed tears.
To concentrate or devote one's energy, attention, funds, etc., to something (e.g., 'to devote effort to').
彼は研究に全力を注いでいる。
He is devoting all his energy to his research.
会社は新製品の開発に資金を注いだ。
The company poured funds into the development of the new product.
To flow into or run into (e.g., a river flowing into a lake). (Intransitive)
小川が湖に注いでいる。
A stream is flowing into the lake.
この川は海に注ぐ。
This river runs into the sea.
To fall (of rain or snow); to pour down (often expressed as 降り注ぐ in compounds). (Intransitive)
一日中、激しい雨が注いだ。
Heavy rain poured down all day.
夏の夕方、雷とともに豪雨が注いだ。
On summer evenings, torrential rain poured down along with thunder.