bull run

Short definition from Wiktionary

Noun

1. 1
   An event in which people run with bulls in the streets.
2. 2
   A contiguous period during which a stock market is a bull market.

Proper noun

1. 1
   A river in Oregon, United States, a tributary of the Sandy.
2. 2
   A creek in South Dakota, United States.
3. 3
   A stream in Virginia, United States, a tributary of the Occoquan.
4. 4
   A census-designated place in Fairfax County, Virginia, United States.
5. 5
   A census-designated place in Prince William County, Virginia, United States.
6. 6
   Two battles of the American Civil War, occurring in 1861 and 1862 on the Virginia stream near Manassas, also known as the 1st and 2nd Battles of Manassas.