Miscellaneous
- Baby mama, the popular street term for the mother of one's illegitimate child
- Bar Mitzvah or Bat Mitzvah, terms for a Jewish child who is considered responsible for their actions, and the ceremony marking this point (usually 13 years of age)
- Black Man A person of African American descent
- Benchmark (surveying), indicating reference points on maps
- Berlekamp-Massey algorithm, an algorithm to construct linear feedback shift registers
- Best man, the chief male assistant to the bridegroom at a wedding
- Bloody Mary (cocktail), popular cocktail containing vodka, tomato juice, and other spices or flavorings
- Brick and mortar, a physical business location
- Builder's Measurement or Builder's Old Measurement, a calculation of ship size used during the 18th and 19th centuries
- Burning Man, an annual event held in the Black Rock Desert of Nevada, USA
- Business model
- Balde de Merda
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