釘釘 [钉钉]

Jyutping
Pinyin dīng dīng

Definitions (CC-CEDICT)
  1. DingTalk, business communication platform developed by Alibaba
Examples (粵典–words.hk)
  1. Cantonese
    板上钉钉嘅事实
    板上釘釘嘅事實
    baan2 soeng6 deng1 deng1 ge3 si6 sat6
    • The fact that is cast in stone