ofer-sáwan
This might be just a supplemental entry adding to an entry in the Main Volume.
In the OE text, the length is:indicated by acute accentsindicated by macronsnot indicated.
ofer-sáwan
Add:I. to sow ground with seed in addition to some already sown. v. Dict. II. to sow seed over other seed Cuóm feónd his and oferseów (ofergeseáw, L. ) weód in midle þæs hwǽtes, Mt. R. !3. 25. [v. N. E. D. ofer-sow.]
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.