- (sometimes humorous) Expressing contempt, disgust, or bad temper.
- "My website is much better than yours!" ― "Let me check... bah!!"
- (military, US) Basic Allowance for Housing
- (law) Abbreviation of Bahamas.
This is the customary abbreviation of this term as used in case citations. See, e.g., The Bluebook: A Uniform System of Citation, Nineteenth Edition (2010), "Geographical Terms: Foreign countries and regions", Table T10.3, p. 438-443.