spearhead
🇺🇸
/ˈspɪrhed/
🇬🇧
/ˈspɪəhed/
The leader or main supporter of an activity.
She was the spearhead of the effort to improve local schools.
彼女は地元の学校を改善する努力の先頭に立った。
To lead or start an activity, especially an attack or a campaign.
She will spearhead the new community project.
彼女が新しいコミュニティプロジェクトの先頭を切る。