singan
This might be just a supplemental entry adding to an entry in the Main Volume.
Related §§ in Wright's OE Grammar:
§7,
In the OE text, the length is:indicated by acute accentsindicated by macronsnot indicated.
singan
I. 1 a. add: α. of the reciting of a charm Þis gebed man sceal singan on ðá blacan blegene, Lch. iii. 40, 8: 42, 7: 294, 7. β. of playing on an instrument Wé sungon eów be hearpan and ge ne saltadun cantavimus uobis tibiis, et non saltastis, Lk. 7, 32. I. 3. AddMan ledde tó his breóstum bráde ísene clútas swíðe glówende hit sang ongeán, Hml. S. 37, 163. v. under-singan; lof-singende.
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.