1. The head and sharpened point of a spear
   "Archaeologists discovered ancient spearheads made of flint";
   - spearpoint, spear-point
    
2. (military) the leading military unit in an attack
   "The spearhead of the invasion force quickly breached the enemy's defences"
    
3. Someone who leads or initiates an activity (attack or campaign etc.)
   "She was the spearhead of the company's expansion into new markets"

1. Be the leader of
   "She spearheaded the effort to find a cure for the disease"

Derived forms: spearheaded, spearheading, spearheads

Type of: force, head, lead, leader, military force, military group, military unit, point

Part of: lance, pike, shaft, spear

Encyclopedia: Spearhead