TNT
noun
1
heroin. A play on DYNAMITE (a powerful drug) UK, 1977.
2
amyl or butyl nitrite UK, 1998.
3
a variety of MDMA, the recreational drug best known as ecstasy. A pun on TNT (the explosive trinitrotulene), suggesting that the ecstasy experience is explosive UK, 1999.
4
fentanyl, a synthetic narcotic analgesic that is used as a recreational drug, 2004