χελιδονιαῖος
From LSJ
εἰ δὲ τύχῃ τις ἔρδων, μελίφρον' αἰτίαν ῥοαῖσι Μοισᾶν ἐνέβαλε → if someone is successful in his deeds, he casts a cause for sweet thoughts into the streams of the Muses
English (LSJ)
α, ον,
A = χελιδόνιος 11, ὄνος Sammelb.6001.5 (ii A. D.); ἰχθῦς PLond.1.130.104 (i/ii A. D., horoscope); ἱ[ππάδα] PThead.4.6 (iv A. D.); = badius, Gloss.; αἱ χελιδονιαῖαι ἀσπίδες prob. for χελιδοναῖαι in Aët. 13.22.