shimpan bucho

Etymology
From, from 審判 (ʃim-pʰàn "to judge", "to try") (compare 🇨🇬 shěnpàn 审判) + 部長 (búw-ʈjáng "department leader") (compare 🇨🇬 bùzhǎng 部长).

Noun

 * 1)  The chief judge at a sumo bout.