A fork of Rural Dictionary
The stripping of enamel from the teeth, caused by prolonged meth smoking. The teeth, lacking enamel, then rot at a much faster rate, often turning black and infecting the gums. Also known as "meth mouth"
K: Yeah the guy's mouth was rotten like he had meth jaw. A: Meth mouth? K: Why yes, meth jaw and meth mouth are synonymous.