Dictionary of Old English Online

Defines the vocabulary of the first six centuries (600 - 1150 A.D.) of the English language, using today's most advanced technology. The DOE complements the Middle English Dictionary (which covers the period 1100 - 1500 A.D.) and the Oxford English Dictionary (which documents the development of the English language to the present), the three together providing a full description of the vocabulary of English.

http://www.lib.umn.edu/get/15114