Also known as: 大きな古時計, 柱時計, 落地钟, 长柱摆钟
AKA: "Longcase clock", "tall-case clock"
A grandfather clock is a tall, freestanding, weight-driven pendulum clock (a clock that uses a Pendulum as its timekeeping element). Clocks of this style are commonly 6-8 feet tall.