[1] Headword and gloss are both dative singular adjectives, neuter or masculine. Assuming some connection to the rest of the entry, this would seem to be a comment on Aristophanes, Birds 698, where the headword (in the dative singular) is applied to Chaos in the course of the parabasis; Chaos is given credit, along with Eros, for being among the progenitors of the birds.
[2] An explanatory paraphrase of Aristophanes, Birds 697. This, along with the remainder of the paragraph, are more clearly derived from commentary to this passage (cf. scholia ad loc.), although the language of the passage itself is never quoted directly. The leading adjective in the paraphrase, e)oiko/ti ("like unto") is in the dative case, suggesting that the commentator is following an alternative (or mistaken) reading in which the phrase (like the primary headword) describes Chaos. In Aristophanes' original phrase, ei)kw\s a)nemw/kesi di/nais ("like unto wind-speedy eddies"), the corresponding adjective ei)kw/s is nominative and describes Eros. The primary headword of this entry does not appear in this phrase.
[3] tou= pterou= tou= *)/erwtos ('of the wing of Eros') should probably read tou= pterw/tou *)/erwtos ('of the winged Eros'), as it is in the scholia.
[4] Here we have the same headword in the nominative case. Adler compares Lexicon Ambrosianum 1448.