LSJ
α, ον, (< κόρη) of a maiden; τὸ κ., = κόρευμα, Sch. E. Alc. 178. Κόρεια (sc. ἱερά), τά, the festival of Kore (Persephone), Plu. Dio 56, Hsch. κόρειον, τό, her temple, IG 14.217 (Acrae), Ath.Mitt. 49.5 (Attica, iii BC).
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)