máwan
This might be just a supplemental entry adding to an entry in the Main Volume.
Related §§ in Wright's OE Grammar:
§5,
In the OE text, the length is:indicated by acute accentsindicated by macronsnot indicated.
máwan
AddHé mǽwð (máweþ, v. l. ) gærs (heig, v. l.) fenum secat, Gr. D. 36, 2. Máwaþ tondent, An. Ox. 43, 15. Hé stóp on þá mǽde, and þá geseah hé hý ealle meówan (meówan heig, v. l. ) pratum ingressus, et omnes intuens fenum secantes, Gr. D. 36, 12. On hærfeste rípan, in Agusto and Septembri and Octobri máwan, Angl. ix. 261, 16. v. á-máwan.
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.