Leóþ-wrenc

According to the Old English Dictionary:

es;

leóþ-wrenc

m. A trick in a poem, a doubtful or spurious passage (?) :-- Dyple obolisrnene . . . byð oft on Uirgilius bácum and on his leóðwrencum gesette, Angl. viii. 334, 19. leoþ-wrenc