Definition of gymnasium
plural gymnasiums
or gymnasia
play
\ sense 1 jim-ˈnā-zē-ə, -zhə; sense 2 is usually gim-ˈnä-zē-ə\
1 a
: a large room used for various indoor sports (such as basketball or boxing) and usually equipped with gymnastic apparatus
b
: a building (as on a college campus) containing space and equipment for various indoor sports activities and usually including spectator accommodations, locker and shower rooms, offices, classrooms, and a swimming pool
2
[German, from Latin, school]
: a European secondary school that prepares students for the university 
