一槌定音 yīchuídìngyīn to make the final decision Origin Definitions Defs Strokes Stroke Words Sentences Sents 一 yī numeral one one; the number 1; single; alone槌 chuí mallet a hammer-like tool with a rounded or thick head used for striking, such as a mallet or pestle定音 dìngyīn to make a final decision To make a final decision about something; to have the final say, often used in the phrase 一锤定音 yīchuídìngyīn