æt-fæstan
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.
æt-fæstan
Add:I. to inflict Æ(t)fæstan inpingere, Wrt. Voc. ii. 44, 72. II. to commit, entrust, deposit Ædfæst depositum. Wrt. Voc. i. 21, 4. II a. to give in marriage :-- Þá ætfæste hé mé míne efen-þeówene, seó þe wæs ǽr óðres gemecca. Shrn. 39, 8. Cf. oþ-fæstan.
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.