heáh-sǽþeóf
This might be just a supplemental entry substituting part of an entry in the Main Volume.
In the OE text, the length is:indicated by acute accentsindicated by macronsnot indicated.
heáh-sǽþeóf
For ' Cot. 9, 191' substitute Heáhséðeáf archiparratta (archipirata, Ald. 56, 31, the gloss to which in An. Ox. 4039 is: Archipirata, i. summus latro flotman), Wrt. Voc. ii. 84, 44. Heáhsǽðeóf, 5, 28. See next word.
This is a supplementary entry with editorial changes to an entry in the main volume of the dictionary. Look under the 'Possibly connected entries' below, or for the same headword in the list to the left.

A Combined List of Abbreviations.

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A Combined List of Abbreviations.