Anglo-Saxon Dictionary (Bosworth-Toller)
Bosworth, Joseph, T. Northcote Toller, and Alistair Campbell. An Anglo-Saxon Dictionary Based on the Manuscript Collections of Joseph Bosworth with Supplement and Revised and Enlarged Addenda. Two vols. Oxford: Oxford University Press, 1898-1972.
Until Toronto’s Old English Dictionary Online is more complete, Bosworth-Toller will remain the standard Old English dictionary. Fortunately, since Old English is a dead language, its dictionaries don’t become outdated quickly and this remains a very useful tool.
A free online version is here. The online version includes the original 1898 dictionary and the 1921 supplement. It does not include the 1972 supplement, which is still under copyright.
Copyright 1997-2015, by David Wilton