'Homeric gloss' (Adler).
The headword is an epic/poetic neuter noun in the nominative (and vocative and accusative) singular; see LSJ s.v., and cf. under iota 712, kappa 1699, chi 174.
[1] The gloss is a neuter noun of the same form as the headword (and is the all-purpose, verse or prose, equivalent of it); cf. tau 242 gloss and LSJ s.v. Same or similar glossing in other lexica, and several scholia; references at Photius tau120 Theodoridis.