hridder
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.
hridder
Add: , hríder, hriddern Hríder glebulum, Wrt. Voc. ii. 98, 12. Hridder capisterium, 92, 3: 19, 38. Hú hé geedstaðelode, tóbrokene hridder (capisterium) . . . hé genam þá sticcu þæs tóbrocenan hriddres (hridderes, v. l.) . . . and hire ágæf hriddern (hridder, v. l. ) . . . þá landleóde áhéngon ilce hriddern (hridder) in þǽre cyrcan ingange, Gr. D. 96, 30-97, 34. [The second passage in Dict., and all but the first here refer to the same incident.] [v. N. E. D. ridder. O. H. Ger. rít(e)ra cribrum.]
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.