réceleásness
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.
réceleásness
AddÁn manricynn wunað . . . under þínum anwealde . . . and þú wást hit wile hearmian þínum cyneríce heora réceleásnysse, gyf him man ne gestýrð heora stuntnysse est populus . . . et nosti, quad non expediat regno tuo, ut insolescat per licentiam, Hml. A. 96, 153.
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.