uppan
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.
uppan
. II I. AddHé sylf þá fæstnunge mid his ágenum handum uppan þone altare álecge (super altare ponat), R. Ben. 101, 7 : 8. Sleá man of þá hand . . . and sette uppon þá mynetsmiððan, Ll. Th. i. 206, 21. II 4. add :-- Nis þé genóh þú sylf losast, þeáh þú uppan (insuper) óþre ne forspylle. Chrd, 74, 29.
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.