Bosworth Toller's

Anglo-Saxon

Dictionary online

reng-wyrm

(n.)
Grammar
reng-wyrm, es; m.

A maw-worm, a worm in the intestines

Entry preview:

A maw-worm, a worm in the intestines Wið ðæt rængcwyrmas (rengc-, MS. B. ; rýnwyrmas with a gloss lumbrici, MS. H.) dergen ymb nafolan, Lchdm. i. 168, 9. Wið ðæt reng-wyrmas ymb ðone nafolan wexen, 218, 14