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to pour (into)
to sprinkle on (from above); to water (e.g. plants); to pour onto; to spray
to shed (tears)
to concentrate one's energy (strength, attention, etc.) on; to devote to; to fix (one's eyes) on
to flow into (e.g. of a river); to run into; to drain into
to fall (of rain, snow); to pour down
「注ぐ」 has another reading with different meanings.
彼女はカップにコーヒーをゆっくり注いでくれた。
She slowly poured coffee into the cup for me.
母は子供たちに惜しみなく愛情を注いだ。
She poured her love into the child.
急須からゆっくりお湯を注いでいる。
I'm slowly pouring hot water from the teapot.