Definitions of bailey:

• noun:   the outer defensive wall that surrounds the outer courtyard of a castle
• noun:   the outer courtyard of a castle
• noun:   English lexicographer who was the first to treat etymology consistently; his work was used as a reference by Samuel Johnson (died in 1742)
• noun:   United States singer (1918-1990)
• name:  A surname (very common: 1 in 869 families; popularity rank in the U.S.: #60)
• name:  A female given name (rare: 1 in 33333 females; popularity rank in the U.S.: #1836)