palaestra
noun
pa·laes·tra pə-ˈle-strə 
plural palaestrae pə-ˈle-(ˌ)strē
1
: a school in ancient Greece or Rome for sports (such as wrestling)
2
: gymnasium
Example Sentences
Recent Examples on the Web Finds include a Roman palaestra (wrestling hall), mosaics, ceramics, a council building and a columned gallery. 
Livia Gershon, Smithsonian Magazine, 17 June 2021
Livia Gershon, Smithsonian Magazine, 17 June 2021 Word History
Etymology
Middle English palestre arena, from Latin palaestra place for wrestling, from Greek palaistra, from palaiein to wrestle
First Known Use
15th century, in the meaning defined at sense 1