釘釘 dīngdīngdìngdīng DingTalk Origin Definitions Defs Strokes Stroke Words Sentences Sents 板上钉钉 bǎnshàngdìngdīng set in stone to be final and unchangeable; to be a done deal铁板钉钉 tiěbǎndìngdīng to be final (idiom) to be a settled matter; to be decided or fixed in a way that cannot be changed