swellan
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.
swellan
Add: p. sweoll (v. á-swellan) His fét wǽron swellende and áþundene for þý wǽtan þǽre fótádle pedes podagrae humore tumescentes, Gr. D. 302, 7.
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.