Headword and glosses are all feminine participles, in the nominative singular.
The headword is the perfect middle/passive participle of the poetic (see LSJ s.v.) verb ἀγλαίζω . It is glossed by two present participles.
The entry is taken from the Synagogê (Lexica Segueriana eta248.27), quoted also in Photius, Lexicon eta39. The original source is unknown; but cf. generally Hesychius, Lexicon eta75: ἠγλαισμένον: φωτείνον, λαμπρον , “splendid: shining, bright”.