noun
biwa-bokuboku; yōkai with a biwa head
A yōkai from Japanese mythology that resembles a Buddhist priest with a biwa (lute) for a head. The name is onomatopoeic, mimicking the sound of a biwa.
See also: 琵琶
琵琶牧々は、鳥山石燕の画集に描かれた妖怪の一つだ。
The biwa-bokuboku is one of the yōkai depicted in Toriyama Sekien's illustrated books.
夜中に琵琶の音が聞こえたら、それは琵琶牧々の仕業かもしれない。
If you hear the sound of a biwa in the middle of the night, it might be the work of a biwa-bokuboku.