The top leaders or leadership group of an organization or country; multiple leaders taken collectively.
主要国の首脳陣がサミットに集まり、協議を行った。
Top leaders of major countries gathered at the summit and held talks.
会社の首脳陣は業績改善のための新方針を発表した。
The company's leadership announced a new policy to improve performance.
首脳陣の意見が割れて会議は延長された。
The meeting was extended because the leadership group was divided in opinion.