máge
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.
máge
Add nán biscop ne nán mæssepreóst næbbe on his húse wunigende ǽnigne wífman, búton hit sý his módor oððe his swustor, faðu oððe móddrige, oððe máge of þám þe ne mage nán unhlísa áspringan, Ll. Th. ii. 376, 23. Fón mágas tó and weddian heora mágan tó wife þám þe hire girnde, i. 254, 20. Gunnilde, Cnutes cynges mágan (sister's daughter), Chr. 1045; P. 165, 23. [v. N. E. D. mowe.] v. níd-máge.
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.