Bah is a girl name. It last appeared in U.S. Social Security records in 1908. Bah first appears in the data in 1888 and reached its peak in 1888 (6 births). The chart below shows how the name has risen and fallen over time.
How popular is Bah? (U.S. births per year)
U.S. births per year, 1888–1908 · hover or tap for the count and national rank · source: U.S. Social Security Administration