city in NE Va., near Bull Run: site of two Civil War battles in which Union forces were defeated: pop. 35,000
Origin:
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See Manassas in American Heritage Dictionary 4
An independent city of northeast Virginia west of Alexandria. The Civil War Battles of Bull Run (called the Battles of Manassas by the Confederates) were fought nearby in July 1861 and August 1862. Population: 36,600.