- (law) Abbreviation of probable.
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), "Explanatory Phrases", Table T8, p. 434-435.
- Abbreviation of probably, often seen in dictionary etymologies.
- (informal) Short form of problem.
- No prob, I'll fix it tomorrow.