ágen
Morphological Analysis
Wordclass: Noun, Adjective, Verb
Gender: Neuter
Verb Class: Participle
This might be just a supplemental entry adding to an entry in the Main Volume.
Related §§ in Wright's OE Grammar:
In the OE text, the length is:indicated by acute accentsindicated by macronsnot indicated.
ágen
. I. AddHis ǽgnu bearn, Past. 409, 5. I a. within one's rights :-- Hit seó ðǽm ágen ǽghwæs tó brúcenne, C. D. iii. 254, 12. v. ge-ágen.
This is a supplementary entry with editorial changes to an entry in the main volume of the dictionary. Look under the 'Possibly connected entries' below, or for the same headword in the list to the left.

A Combined List of Abbreviations.

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A Combined List of Abbreviations.