for-beornan
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.
for-beornan
Add: — Gif hwæs weorc forbyrnð, hé hæfð þone hearm si cujus opus arserit, detrimentum patietur. Hml. Th. ii. 588, 30. Lígýðum forborn bord, B. 2672. Forborn þurh þæs fíres fnǽst fíf and hundseofontig herges, Jul. 587. Ealle ðá clifu forburnan tó ascan, Ors. 5, 4 ; S. 226, 5. His weorc sceal on ðám fýre forbyrnan. Hml. Th. ii. 590, ii. Þá þá seó ceaster swýþlíce barn . . . heom þúhte eall seó burh forbyrnan sceolde cum civitas vehementer arderet . . . ut flamma totius urbis interitum minari videretur, Gr. D. 47, 27 : Bl. H. 221, 9. Þ hús wearð forburnon buton þám ánum poste, Hml. S. 26, 232. [v. N. E. D. forburn. O. H. Ger. fer-brinnan uri. ardere.] v. un-forburnen.
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.

Abbreviation not recognized. See:

A Combined List of Abbreviations.