buteruc
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.
buteruc
Add: — Næfdon hí nán wín búton on ánum gewealdenan butruce . . . wæs se buteruc brerdful wínes. Hml. S. 6, 274-282. Sum man sende twégen butrucas mid wíne (cf. twá treówene fatu fulle wínes, on folcisc flascan gehátene vino plena duo ligneaa
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.