LSJ
Hdn. Gr. 1.436, EM 20.11; impf. Med. ἀέσκοντο Hsch. ; aor.1 ἄεσα, ἀέσαμεν, contr. ἄσαμεν, ἄεσαν, inf. ἀέσαι :
sleep, Od. 19.342, 3.151, 490, 15.40, A.R. 4.884.
(Etym. dub., but νύκτα ἀ. has been expl. as pass, spend the night, cf. Skt. vásati.) [ᾱ metri gr. or by contraction, ᾰ otherwise.]
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)