spearhead[verb]Synonyms: lead, head, initiate, launch, pioneer, set in motion, set off
[TahlilGaran] English Synonym Dictionary ▲
II. spearhead2 noun [countable usually singular] a person or group of people who lead an attack or organized action
spearhead of
The group became the spearhead of the labor union movement. [TahlilGaran] Dictionary of Contemporary English ▲