Eyre. n.s. [eyre, French; iter, Latin.] The court of justices itinerants; and justices in eyre are those only, which Bracton in many places calls justiciarios itinerantes. The eyre also of the forest is nothing but the justice-seat, otherwise called; which is, or should by ancient custom, be held every three years by the justices of the forest, journeying up and down to that purpose. Cowel.