líþan
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.
líþan
Add: — Þonne wé líðað (navigamus) feor, æt néhstan wé nó geseóð þá stilnesse þǽre hýþe þe wé ǽr fram léton, Gr. D. 6, 17. Þá eódon hí of þám scipe, þá þe líþon and fÝron mid Maximiane (qui cum Maximiano navigabant), 249, 14. Þá wæs heofones smyltnes tósliten, þǽre þe wé ǽr úton leoþon (liþon, v. l.)
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A Combined List of Abbreviations.