一锤定音

lit. to fix the tone with a single hammer blow / fig. to make the final decision

one / single / a (article) / as soon as / entire; whole; all; throughout / "one" radical in Chinese characters (Kangxi radical 1) / also pr. [yao1] for greater clarity when spelling out numbers digit by digit

hammer / to hammer into shape / weight (e.g. of a steelyard or balance) / to strike with a hammer

variant of 錘|锤[chui2]

to set / to fix / to determine / to decide / to order

to call the tune / to make the final decision

sound / noise / note (of musical scale) / tone / news / syllable / reading (phonetic value of a character)