The Collaborative International Dictionary
Begnawn
Begnaw \Be*gnaw"\, v. t. [p. p. Begnawed, (R.) Begnawn.] To gnaw; to eat away; to corrode.
The worm of conscience still begnaw thy soul.
--Shak.
Wiktionary
begnawn
vb. (context obsolete English) (past participle of begnaw English)