Vanguard is defined as the leading position in a movement.
(noun)An example of vanguard is the front position in a battle.
See vanguard in Webster's New World College Dictionary
noun
Origin: ME vaunt garde < OFr avant-garde < avant, before (see avaunt) + garde (see guard)
See vanguard in American Heritage Dictionary 4
noun
Origin:
Origin: Middle English vandgard
Origin: , from avaunt garde
Origin: , from Old French
Origin: : avaunt, before (from Latin abante; see advance)
Origin: + garde, guard (from garder, to guard; see guard)
.Related Forms:
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