Webster's Revised Unabridged Dictionary
OF. essoine, essoigne, F. exoine, L. essonia, exonia,; pref. ex-,L. ex, from) + sunnis, sunnia, sonia, hindrance, excuse. Cf. Icel. syn, refusal, synja, to deny, refuse, Goth. sunja, truth, sunjōn, to justify, OS. sunnea, impediment, OHG. sunna,
Chambers's Twentieth Century Dictionary
O. Fr. essoine (Fr. exoine), es—L. ex, out, soin, care.
The appellees have not come nor essoined themselves.
"Our Legal Heritage, 5th Ed." by S. A. Reilly
The abbot thereupon offered himself several times without any essoin.
"The Chronicle of Jocelin of Brakelond: A Picture of Monastic Life in the Days of Abbot Samson" by Jocelin de Brakelond