spearhead

[ speer-hed ]
/ ˈspɪərˌhɛd /

noun

the sharp-pointed head that forms the piercing end of a spear.
any person, contingent, or force that leads an attack, undertaking, etc.

verb (used with object)

to act as a spearhead for: She spearheaded the drive for new members.

Origin of spearhead

Middle English word dating back to 1350–1400; see origin at spear1, head
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for spearhead

British Dictionary definitions for spearhead

spearhead
/ (ˈspɪəˌhɛd) /

noun

the pointed head of a spear
the leading force in a military attack
any person or thing that leads or initiates an attack, a campaign, etc

verb

(tr) to lead or initiate (an attack, a campaign, etc)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012