"Bosworth–Toller/Charles Anglo-Saxon Dictionary" is a dictionary of Anglo-Saxon (Old English) to Modern English based on Joseph Bosworth's 1898 "An Anglo-Saxon Dictionary" and the 1921 supplement by Northcote Toller (a.k.a. "Bosworth–Toller"). It can search for Anglo-Saxon terms (including inflected forms) as well as the Modern English terms that occur in the definitions.