Definition of eyre in US English:

eyre

noun

historical
  • A circuit court held in medieval England by a judge (a justice in eyre) who rode from county to county for that purpose.

    • ‘The sheriffs performed much the same duties as their English counterparts, while judicial eyres administered justice, at least for the English settlers.’
    • ‘The only sources perused systematically were the English eyre rolls, which gives, not surprisingly, a distinctly English flavor to his analysis.’
    • ‘Most of these cases are from the records of the Eyre Court of Oxfordshire in 1241.’
    • ‘This was the highest tribunal of the Forests, and the Chief Justice in Eyre, who presided at it, was at the head of this division of the English legislature.’

Origin

Middle English: from Old French eire, from Latin iter ‘journey’.

Pronunciation

eyre

/er//ɛr/