gang-setl
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.
gang-setl
Add: A stool (of a privy) Þás úplendiscan wíf wyllað oft drincan and furþon etan fúllíce on gangsetlum . . . hit is bysmor þæt ǽnig man . . . þone múð ufan mid mettum áfylle, and on óðerne ende him gange þæt meox út fram, and drince þonne ǽgðer ge þæt ealu ge þone stenc, E. S. viii. 62, 13. v. next word.
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.