On-legen

According to the Old English Dictionary:

e;

on-legen

f. An on-laying, (medicinal) application:--Onlegen (GREEK) tó trymmanne ðone magan, Lchdm. ii. 180, 24. Mid onlegene swá swá mon of swelcum þingum wyrcþ . . . Lácna mid onlegena beres, 82, 14-24. Gesodene wuduæpla and hlafes cruman and swilce onlegena, 190, 15. on-legen