契細佬 [－细－]

Jyutping kai3 sai3 lou2
Pinyin qì xì lǎo

Definitions (CC-CANTO)
  1. god younger brother
Definitions (粵典–words.hk)
  1. 名詞
    唔​係​真正​嘅​細​佬​，​雙方​冇​血緣關​係​；​兩個​年紀​唔​係​差​好​遠​嘅​人​，​因為​感情​好好​，​所以​就​結成​契​兄弟​姊妹​，​如果​年紀​比​較​細​嘅​係​男性​，​咁​大​啲​果個​就​叫​佢​契​細​佬
    a younger boy or man treated as a younger brother
Definitions (Kaifangcidian)
  1. 乾弟 – 干弟
  2. 義弟 – 义弟
  3. 乾弟弟 – 干弟弟