Zen — a Japanese form of Mahayana Buddhism which focuses on meditation
Doan — the person who rings the bell during service
Dokusan — a private meeting with the Zen teacher
Ino — the person who leads chants during the service
Mokugyo — the drum used during the service, also refers to the person doing the drumming
Sesshin — an extended meditation retreat of about 3 to 7 days
Zazen — meditation
Zazenkai — an extended meditation retreat of a full day
Zendo — meditation hall