nágan
This might be just a supplemental entry adding to an entry in the Main Volume.
In the OE text, the length is:indicated by acute accentsindicated by macronsnot indicated.
nágan
I. Add náh æfter forðsíðe crístenra manna gemánan. Ll. Th. i. 372, 34. II. add Náh man on ǽnigne tíman dæges ne nihtes æt Godes húse unnyt tó dónne, Wlfst. 278, 18: 39, 16. Be þám magon Godes þeówas gecnáwan hí nágon mid worldcampe tó farene, ac mid gástlican wǽpnan campian, Ll. Th. ii. 388, 4. III. not to te obliged or bound to do Ðá ðá Landfranc cræfede fæstnunge his gehérnesse mid áðswerunge, þá forsóc hé and sǽde hé hit náhte tó dónne (he was not bound to do it ), Chr. 1070; P. 206, 2.
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.