brim-nesen
This might be just a supplemental entry substituting part of an entry in the Main Volume.
In the OE text, the length is:indicated by acute accentsindicated by macronsnot indicated.
brim-nesen
l. (?) brim nésen, and substitute Gif hié brim nésen (cf. Gen. 1341) and gesundne síð settan mósten if they came safe from the sea, and might make a prosperous passage , El. 1004.
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.