Zen meditation hall; zendo
A hall in a Zen Buddhist temple where monks sit in meditation (zazen). The term is used in both traditional and modern Zen contexts.
修行僧たちは毎朝禅堂で座禅を組む。
The monks in training sit in meditation in the zendo every morning.
Compound of 禅 (zen, 'Zen Buddhism') and 堂 (dō, 'hall'). The reading ぜんどう follows standard on'yomi.