bull run is a noun meaning "a creek in northeastern Virginia where two battles were fought in the American Civil War". It carries 2 recorded senses.
either of two battles during the American Civil War (1861 and 1862); Confederate forces defeated the Federal army in both battles
Virginia
Definitions, synonyms and semantic relations for bull run come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.