cúþ
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.
cúþ
; I. AddNú tólýsde swíðe cúð (aperta ) gesceádwísnes þone tweón mínes geþóhtes, Gr. D. 228, 2. II. AddLandes dǽl ðe fram cúðum mannum Hindehlép is geháten, C.D. iii. 5, 7. III. AddHié nǽnigne cúðne næfdon, mid hwám hié wunian meahton nullus erat notus, apud quem potuissent hospitari, Verc. Först. 83, 5. Manige his cúðra manna, ge æþelcunde ge óðre, þá þe hine swíðe árodon, Gr. D. 22, 14. v. full-cúþ, ge-cúþ, hám-cúþ, híred-cúþ, nam-cúþ.
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.