Wart gong - Ibodora

...The gongs come in various sizes, with diameters starting from about 30cm, and are used in Kabuki music, Ming and Qing music, folk performing arts, and vaudeville theaters. In folk performing arts, they are often used in Chinese-style performing arts, such as Nagasaki's Karakoodori (lion dance), and Okinawa's Tafuaku and lion dance. There are also small gongs with many warts on them, called Ibodora. In the tea ceremony, gongs are used to signal the standing attendees to welcome the seated guests, and are usually struck seven times....

*Some of the terminology explanations that mention "wart gong" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…盤の直径30cmくらいから大小あり，歌舞伎囃子，明清楽，民俗芸能，寄席などでも用いられるが，民俗芸能では長崎の唐子踊（からこおどり）(獅子舞)，沖縄の打花鼓（たーふあーく）や獅子舞など中国的な芸能に使用することが多い。多数のいぼを打ち出した疣銅鑼（いぼどら）と呼ぶ小型のものもある。また茶の湯では茶事の際，中立ちして腰掛けにいる客を迎える合図に銅鑼を用い，通常7点打つ。…

※「疣銅鑼」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報