gym [gyms](sporting facility specialized for lifting weights and exercise) noun [UK: dʒɪm] [US: ˈdʒɪm]He's at the gym. = È in palestra.
gymnasium [gymnasia](place for indoor sports) noun [UK: dʒɪm.ˈneɪ.zɪəm] [US: ˌdʒɪm.ˈneɪ.ziəm]I got a glimpse of the wrestler as he hurriedly left the gymnasium. = Ho avuto uno scorcio del lottatore mentre lasciava frettolosamente la palestra.