一锤定音 yīchuídìngyīn to have the final word Origin Definitions Defs Strokes Stroke Words Sentences Sents 一 yī numeral one one; the number 1; single; alone锤 錘 chuí noun hammer a tool consisting of a heavy head fixed to a handle, used for hitting things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