1. the point of a spear.Similarspear tipspear point
▪ an individual or group chosen to lead an attack or movement:"she became the spearhead of a health education program"Similarleader(s)driving forceforefrontavant-gardefront runner(s)front linevanguardvancutting edge
verb
1. lead (an attack or movement):"he's spearheading a campaign to reduce the number of accidents at work"