spearhead

US /ˈspɪr.hed/
UK /ˈspɪr.hed/
1.

mũi nhọn

to lead something such as an attack or a course of action:

:
British troops spearheaded the invasion.
1.

mũi nhọn

a person or group that leads something such as an attack or a course of action:

:
American troops formed the spearhead of the attack.