riht-lǽcan
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.
riht-lǽcan
Add:(?) : to agree, be fitting Gehwǽrlǽcan ł riht-[lǽcan] congruant, i. conueniant (quamvis gymnicorum exempla . . . rite congruant ad comparationem eorum, Ald. 3, 23), An. Ox. 66. Rihtlǽcan seems doubtful here, as the verb elsewhere is transitive, and means to set right. Riht seems to refer to rite, and riht-geþwǽrlǽcan to be the completion intended.]
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.