hyrnetu
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.
hyrnetu
Add:I. a hornet Hirnitn crabro, Txts. 52, 275. Hyrnetu, Wrt. Voc. i. 281, 41 : ii. 136, 60. Hymette (hyrnete, v. l.) scabro, Ælfc. Gr. Z. 307, 13. II. a gad-fly Beáw vel hyrnette vestrum, Wrt. Voc. i. 23, 64.
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.