n. 25B6; noun
a Bronze Age spearhead : SPEAR TIP, spear point.
the spearhead of the struggle against Fascism : LEADER(S), driving force; forefront, front runner(s), front line, vanguard, van, cutting edge.
25B6; verb she spearheaded the campaign : LEAD, head, front; lead the way, be in the van, be in the vanguard.