- Slang magazine (noun)
- mag wheel
- (law) Abbreviation of magistrate.
This is the customary abbreviation of this term as used in legal citation, when referring to the title of an individual officeholder. See, e.g., The Bluebook: A Uniform System of Citation, Nineteenth Edition (2010), "Judges and Officials", Table T11, p. 443.
mag - Computer Definition
(MAGnetic) A common abbreviation for magnetic. For example, "mag tape" means magnetic tape.