常じょう香こう盤ばん

noun

incense clock

A historical timekeeping device that marks time by the burning of a trail of incense. Rarely encountered outside historical or cultural contexts.

• 江え戸ど時じ代だいには、常じょう香こう盤ばんが時じ刻こくを知しるために使つかわれていた。

  In the Edo period, incense clocks were used to tell the time.