óm
This might be just a supplemental entry adding to an entry in the Main Volume.
This might be just an editorial note deleting 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.
óm
Dele first passage, and add Þǽr þǽr óm and moðþan hit áwéstað, Wlfst. 286, 32. hé ná tó swíðe ne gewilnige up áwyrtlin rust oððe óm sí tóbrocen fæt ne dum nimis cupit eradere eruginem frangatur vas, R. Ben. I. 108, 7. Hóm rubiginem, Kent. Gl. 954. Hé sealde ómum (erugini) wæstmas heora, Ps. L. 77, 46. v. ár-(Lch. ii. 192, 22), sinder-óm.
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.