Eyre
Eyre (âr) , noun
[Old French erre journey, march, way, from Latin iter, itineris, a going, way, from the root of ire to go. Compare Errant, Itinerant, Issue.]
(O. Eng. Law) A journey in circuit of certain judges called justices in eyre (or in itinere).
They were itinerant judges, who rode the circuit, holding courts in the different counties.