Methamphetamine (noun)

1. A highly addictive central nervous system stimulant drug.
2. A synthetic drug that is similar to amphetamine but more potent.

Origin:

From the german methamphetamin, a trade name for the drug.

Examples:

1. Methamphetamine is a highly addictive stimulant drug.
2. The drug bust uncovered a methamphetamine laboratory.
3. Methamphetamine abuse can lead to serious health problems.
4. The patient was found to have used methamphetamine.
5. Methamphetamine is a Schedule II controlled substance.