rodor
This might be just a supplemental entry adding to an entry in the Main Volume.
Related §§ in Wright's OE Grammar:
In the OE text, the length is:indicated by acute accentsindicated by macronsnot indicated.
rodor
I. AddOn ðám óðrum dæge úre Drihten geworhte firmamenum, ðe men hátað rodor . . . Ðone rodor God gehét heofon, Hex. 8, 25-10, 1. II. Add (Gregory) monncynnes mǽst gestriénde rodra wearde, Past. 9, 11. Bið swíðe mycel stefn gehýred on eástweardum heofones roderum erit vox magna in firmamento caeli ab oriente, Verc. Först. 122, 6. v. norþeást-rodor.
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.