hwistlung
This might be just a supplemental entry adding to an entry in the Main Volume.
In the OE text, the length is:indicated by acute accentsindicated by macronsnot indicated.
hwistlung
Add:I. hissing, whistling Leóhtlic hwyslung (sibilus) mæg hors tamcyan, Chrd. 96, 18. ;;]istlunge sibilabat tota regio , Nar. 13, 22. Mislice fugela hwistlunge, Guth. 48, 5. Nǽddrena hwistlunge sibilos serpentium , Gr. D. 185, 3. II. piping, playing on a pipe [l. (?) wistlung. v. wistle], Lk. L. 15, 25 (in Dict.).
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.