'big sister'; slang for a female who often leads others in doing things or is often being relied on by others to make decisions or plans; a female gang leader
Definitions (粵典–words.hk)
名詞
喺某個行業入面成就突出嘅女性 a female boss in an industry
茉莉係保險業嘅大姐大。
茉莉系保险业嘅大姐大。
mut6 lei2 hai6 bou2 him2 jip6 ge3 daai6 ze1 daai6. Jasmine is the female representative in the insurance industry.