伍一 (wǔ yī) — (slang) a mole, an undercover agent embedded in a group

Definition

Slang (literally 'five-one') for a mole or undercover agent planted inside a group. Not a literal numeral — the digits evoke the look of a person disguised within a crowd.

numeral
(slang) a molean undercover agent embedded in a group

Examples

  • 伍一
    Xiǎo xīn, wǒ men zhōng jiān kě néng yǒu yí gè wǔ yī.
    Be careful, there might be a mole among us.
  • 伍一
    Diàn yǐng lǐ de wǔ yī zuì hòu bèi fā xiàn le.
    The mole in the movie was discovered in the end.
  • 伍一
    Jǐng fāng pài le yí gè wǔ yī jìn rù fàn zuì tuán huǒ.
    The police sent a mole into the criminal gang.

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