swimman
This might be just a supplemental entry adding to an entry in the Main Volume.
Related §§ in Wright's OE Grammar:
§8,
In the OE text, the length is:indicated by acute accentsindicated by macronsnot indicated.
swimman
. II. AddHú hé þonne swam mid þám ilcan scipe, þonne hit wæs ýþa full qualiter cum carabo undis pleno nataverat, Gr. D. 347, 21. III. AddÁgeót wæter uppon ðone ele, and se ele ábrecð úp and swimð bufon, Hml. Th ii. 564, 14. v. þurh-swimman.
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.