Be-weallan

According to the Old English Dictionary:

be-weallan

p. -weóll, pl. -weóllon; pp. -weallen, To boil away; decoquere :-- Óþ-ðæt þrydda dǽl sý beweallen till the third part be boiled away, Med. ex Quadr. 1, 3; Lchdm. i. 328, 17 : 8, 10; Lchdm. i. 360, 1. be-weallan