πέτρος, ὁ
(in later Poets ἡ, [[“Anthologia Graeca” 7.274 (1st c.BC(?): Honestus Epigrammaticus), 479 (3rd c.BC: Theodoridas Epigrammaticus))] Refs 3rd c.BC+], stone (distinguished from πέτρα, which see); in [[ 8th c.BC: Homerus Epicus ] Refs 8th c.BC+], used by warriors, λάζετο πέτρον μάρμαρον ὀκριόεντα [[ 8th c.BC: Ilias Homerus Epicus “Illiad” 16.734; βαλὼν μυλοειδέϊ πέτρῳ 7.270, compare 20.288, 5th c.BC: Euripides Tragicus “Andromache” 1128 (never in 8th c.BC: Odyssea Homerus Epicus “Odyssey”); ἔδικε πέτρῳ 5th c.BC: Pindarus Lyricus “O.” 10(11).72; ἄγαλμ᾽ Ἀΐδα ξεστὸν π. ἔμβαλον στέρνῳ [prev. author] “N.” 10.67; νιφάδι γογγύλων πέτρων 4th-5th c.BC: Aeschylus Tragicus “Fragmenta - American Journal of Philology” 199.7; ἐκ χερῶν πέτροισιν ἠράσσοντο [prev. author] “Pers.” 460; λευσθῆναι πέτροις 5th c.BC: Sophocles Tragicus “Oedipus Coloneus” 435; πέτρους ἐπεκυλίνδουν 5th-6th c.BC: Xenophon Historicus “Historia Graeca (Hellenica)” 3.5.20, etc.] Refs 8th c.BC+]; ἐν πέτροισι πέτρον ἐκτρίβων, to produce fire, [[ 5th c.BC: Sophocles Tragicus “Philoctetes” 296 ] Refs 5th c.BC+]; of a boulder forming a landmark, [[ [prev. author] “OC” 1595; τόνδ᾽ ἀνέθηκα π. ἀειράμενος “IG” 42(1).125 (Epid., 3rd c.BC). ] Refs 3rd c.BC+]
__2 proverbial, πάντα κινῆσαι πέτρον 'leave no stone unturned', [[ 5th c.BC: Euripides Tragicus “Heraclidae” 1002, compare 5th-6th c.BC: Plato Philosophus “Leges” 843a ] Refs 5th c.BC+]; of imperturbability, καὶ γὰρ ἂν πέτρου φύσιν σύ γ᾽ ὀργάνειας [[ 5th c.BC: Sophocles Tragicus “Oedipus Tyrannus” 334, compare 5th c.BC: Euripides Tragicus “Medea” 28. ] Refs 5th c.BC+]
__II a kind of reed, [[ Peripl.M.Rubr. 65.] Refs] —The usual Prose word is λίθος.