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The Japanese word

長官

is pronounced
choukan | ちょうかん
means
chief, (government) secretary
Examples:
国務長官は対外関係を統括する。
kokumu chōkan wa taigai kankei o tōkatsu suru.
The Secretary of State administers foreign affairs.
大統領は彼を国務長官に指名した。
daitōryō wa kare o kokumu chōkan ni shimei shi ta.
The President nominated him to be Secretary of State.
パウエル米国国務長官の来日中、事件は起こった。
paueru beikoku kokumu chōkan no rainichi chū, jiken wa okotta.
The incident occurred while Secretary of State, Powell, was visiting Japan.
Examples sourced from tatoeba.org