noun
hourglass-shaped object
Refers to a traditional Japanese hourglass-shaped object, often used in sarugaku performances.
輪鼓は散楽で使われる道具の一つだ。
The ryūgo is one of the props used in sarugaku.
noun
sarugaku performance using an hourglass-shaped object
A specific performance art within sarugaku that features the hourglass-shaped object.
See also: 散楽
輪鼓の演技は非常に珍しい。
Performances of ryūgo are very rare.
Sarugaku is the broader category of traditional Japanese performing arts; 輪鼓 is a specific prop and performance within it.
The term 輪鼓 (りゅうご) literally combines 輪 (ring) and 鼓 (drum), likely referring to the shape of the object. The exact historical derivation is uncertain.