STEP Liddell–Scott–Jones: πόρνη

πόρν-η, ἡ,

harlot, prostitute, [[ 7th c.BC: Archilochus Lyricus 142, 5th-6th c.BC: Aristophanes Comicus “Acharnenses” 527, etc. (Prob.from πέρνημι,] Refs 7th c.BC+] because Greek prostitutes were commonly bought slaves.)