n.[C]

1. 矛頭，槍尖
2. 先鋒；先鋒部隊[S1][（+of）]
   A spearhead of tanks led the infantry attack.

   坦克先遣隊引導步兵進攻。

vt.

1. 當……的先鋒；為……掃清道路；帶頭
   Plastics spearheaded the advance in synthetic materials.

   塑膠是合成材料發展的先導。

   The airborne troops spearheaded the crossing of the river.

   空降兵在渡河作戰中擔任先導。

   The project to explore Mars is spearheaded by NASA.

   探索火星的計劃是由太空總署帶領的。

n.

1. the point of a spear.
2. an individual or group leading an attack or movement.

v.