Bos.

Bos.

1. (law) Abbreviation of Boston.

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: U.S. state, cities, and territories", Table T10.1, p. 436.

• OSB, SOB, sob, SBO, obs, BSO, obs., Obs, OBs