palaestra
A public area in ancient Greece and Rome dedicated to the teaching and practice of wrestling and other sports; a wrestling school, a gymnasium.
historical
Athenian culture flourished in externalities, the open air of the agora and the nudity of the palestra.
An arena for literal or figurative combat; a battlefield.
Where it comes from
Borrowed from Latin palaestra, from Ancient Greek παλαίστρα (palaístra, “wrestling school”).
Adapted from the Wiktionary entry palaestra (CC BY-SA 4.0).