ἀκρό-νῠχος · akro-nychos — LSJ
at nightfall, ἄνεμοι Arist. Mete. 367b26; ἀνατολαί Thphr. Sign. 2; φάσεις Procl. Hyp. 5.66; σφάζων ἀκρόνυχος Theoc. Beren. 3, cf. Nic. Th. 761:—neut. as Adv., Arist. Pr. 942a23. (Written ἀκρώνυχος in PHib. 27 (iii B. C.).)