sǽne
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.
sǽne
AddIc tó sǽne wæs míne leomu for ðé tó bíganne and míne teáras tó geótanne, Angl. xii. 508, 8. Þý lǽs hié for ðon ormóde wǽron and þý sǽnran mínes willan and weorðmyndo, Nar. 32, 23.
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.