打大數 [－－数]

Jyutping daa2 daai6 sou3
Pinyin dǎ dà shù

Definitions (粵典–words.hk)
  1. 動詞
    幾個​人​一齊​做生意​（​承辦​一項​工程​、​經營​一間​飛​髮​舖​）​，​一齊​做​嘢​，​平分​利潤
    to work together and share profit