- the pointed head of a spear
- the leading person, part, or group in an endeavor, esp. in a military attack
to take the lead in (an attack, etc.)
- The sharpened head of a spear.
- a. The leading forces in a military thrust.b. The driving force in a given action, endeavor, or movement.
transitive verbspear·head·ed, spear·head·ing, spear·heads
To be the leader of (a movement, for example).
(third-person singular simple present spearheads, present participle spearheading, simple past and past participle spearheaded)