Definition of oyer and terminer in English:

oyer and terminer

noun

historical
  • A commission issued to judges on a circuit to hold courts:

    ‘a court of oyer and terminer’
    • ‘At first in the General Eyre and later under the commissions of oyer and terminer and gaol delivery, they would hear criminal cases.’
    • ‘Following the outbreak of witchcraft accusations in Salem, Phips appointed Stoughton chief justice of the newly formed court of oyer and terminer.’

Origin

Late Middle English: from Anglo-Norman French oyer et terminer hear and determine.

Pronunciation:

oyer and terminer

/ˌɔɪə ən(d) ˈtəːmɪnə/