Since this adjectival form is unattested elsewhere, it may be that the Anglo-Norman glosses the Latin adjective (‘scaly, rough’, DMLBS squarrosus 3174a) imperfectly, and that the word should be read nominally, without the accent, as another attestation of roigne¹. Any association with the verbs roigner (‘to cut, trim’) or runger (‘to gnaw, nibble’), which derive from different etyma, seems semantically impossible.