What is the meaning of Meth?

Methamphetamine, especially in the form of the crystalline hydrochloride.

Methadone.

A tramp.

A spiced mead, originally from Wales.

Marijuana.

failure

shame, disgrace

nurture, nourishing

alternative form of mede (“mead (beverage)”)

praise

failure, fault, defect

cessation

adversity, misfortune

Source: wiktionary.org