鬼gwai2頭tau4仔zai2

English

1. a traitor, a term commonly used specifically to refer to a police informant
2. a traitor, an informer or spy withing an organisation, a "mole".unreviewed?

粵語 — Cantonese

1. 叛徒，或指敵方滲透入嚟我方嘅間諜，卧底。unreviewed?

Examples

• unreviewed?

  舊時香港警察隊，能夠用英文直接同洋人警官溝通（或者打小報告）嘅華人人員或線人；駁腳偵探

  in old days, local officer or mole who could communicate with foreign police officers in English