Definition of 「鼖」:
1. Ancient large drum used in the military.
2. Ancient military large drum: "to use the drum to command the military."
3. Noun: An ancient military drum, eight feet long. From "Shuo Wen Jie Zi, Drum Section": "鼖, the large drum is called 鼖. It is eight feet long and has two faces, used to command the military." From "Ming History, Volume 62, Music Chapter 2": "As summer begins, the breeze is fragrant, and during the solemn ceremonies, the bell and 鼖 are struck."