godan verb (-su)
pour out; pour forth
Used for pouring liquid out of a container, often with a sense of emptying it. Can also be used figuratively for pouring out emotions or effort.
彼はやかんからお茶をカップに注ぎ出した。
He poured tea from the kettle into the cup.
彼女は自分の気持
She poured her feelings into the letter.