kingpin
🇺🇸
/ˈkɪŋpɪn/
🇬🇧
/ˈkɪŋpɪn/
A person who is the most important or influential in a particular group or field.
The kingpin of the criminal organization was arrested by the police.
범죄 조직의 두목이 경찰에 의해 체포되었다.