Definition of quo warranto in English:

quo warranto

noun

US
Law
historical
  • [usually as modifier] A writ or legal action requiring a person to show by what warrant an office or franchise is held, claimed, or exercised.

    ‘rigorous quo warranto proceedings’

Origin

Law Latin, literally by what warrant.

Pronunciation:

quo warranto

/ˌkwəʊ wəˈrantəʊ/