What is "sorehon"

Sorehon \Sore"hon\, n. [Corrupted from sojourn, Scot. soirne, sorn.] Formerly, in Ireland, a kind of servile tenure which subjected the tenant to maintain his chieftain gratuitously whenever he wished to indulge in a revel.
--Spenser.

n. (context historical English) A kind of servile tenure in Ireland which required the tenant to maintain his chieftain gratuitously whenever he wished to indulge in a revel.