á-bryrdan
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.
á-bryrdan
Add:I. to instigate, stimulate, incite Ic trúwige ðæt sum wurðe ábrird, ðæt hine liste gehíran ðá hálgan láre, Ll. Th. ii. 364, 17. Æfter ðisum wordum wurdon ðá munecas mycclum ábryrde, Hml. S. 6, 344. Hí beóð ábrerde (divinae dilectionis stimulo) compunguntur, An. Ox. 973. II. to make contrite, remorseful Áspíwan synna þurh ábryrde andetnysse, Wlfst. 150, 4. Hí ne synt ábryrde (compuncti), Ps. L. 34, 16. Dám ábryrdum contritis, An. Ox. 4122. v. on-bryrdan.
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.