εἰκάς, άδος, ἡ,
Aeolic dialect dative plural εἰκάδεσσι [[ 5th c.BC: Bacchylides Lyricus “Scolia” 1361 “fragment” 1.5] Refs 5th c.BC+]: (εἴκοσι):—twentieth day of the month (i.e. ἡμέρα), [[ 8th-7th c.BC: Hesiodus Epicus “Opera et Dies” 792, 820, 1st-2nd c.AD: Plutarchus Biographus et Philosophus 2.1089c, etc.: _plural_, 5th c.BC: Bacchylides Lyricus [same place], 4th-3rd c.BC: Epicurus Philosophus “Fragmenta” 217 ] Refs 8th c.BC+]; ἡ πρώτη, δευτέρα, etc., μετ᾽ εἰκάδα, εἰκάδας, the 21st, 22nd, etc., [[ 4th-3rd c.BC: Menander Comicus 320.3, “IG” 22.890, etc.; τετάρτη ἐπὶ εἰκάδι “IG” 9(1).694.2 (Corc.): hence εἰκάδες, αἱ ] Refs 4th c.BC+], the last ten days of the month, [[ 5th-6th c.BC: Andocides Orator 1.121; σελήνην ἄγουσαν εἰκάδας 5th-6th c.BC: Aristophanes Comicus “Nubes” 17 ] Refs 5th c.BC+]; τρίτῃ εἰκάδι, i.e. the 23rd, [[ 5th-6th c.BC: Plato Philosophus “Leges” 849b. ] Refs 5th c.BC+]
__II name of the sixth day of the Eleusinian mysteries (= Boedromion [[ 20), 5th c.BC: Euripides Tragicus “Ion” 1076 (_plural_, Lyric poetry), compare 1st-2nd c.AD: Plutarchus Biographus et Philosophus “Phocion” 28. ] Refs 5th c.BC+]
__III plural, divisions of a tribe, [[ 5th c.AD(?): Hesychius Legal icographus ] Refs 5th c.AD+]