The Collaborative International Dictionary
Pnyx \Pnyx\, n. [NL., fr. Gr. ?.] (Gr. Antiq.) The place at Athens where the meetings of the people were held for making decrees, etc.
Wikipedia
The Pnyx (; ; , Pnyka) is a hill in central Athens, the capital of Greece. Beginning as early as 507 BC, the Athenians gathered on the Pnyx to host their popular assemblies, thus making the hill one of the earliest and most important sites in the creation of democracy.
The Pnyx is located less than west of the Acropolis and 1.6 km south-west of the centre of Athens, Syntagma Square.
Usage examples of "pnyx".
Those who hold that the Lenaea and Anthesteria were entirely separate, have affirmed that the play opens on the Pnyx in Athens, that the scene changes to the country-house of Dicaeopolis in Cholleidae, at the season of the country Dionysia in the month Posideo.
The scene, the Pnyx with the houses of Dicaeopolis, Lamachus, and Euripides near by, remains the same.
So we have it located within narrow limits, somewhere in the space bounded on the east by the eastern limit of the agora in Ceramicus, south by the Areopagus, west by the Pnyx and the Hill of the Nymphs, and north by the Dipylum.