Green’s Dictionary of Slang

d.m.t. n.

[abbr.]

(drugs) dimethyltryptamine.

[US]H.S. Thompson Hell’s Angels (1967) 223: A few will [...] on top of everything else shoot some methydrine or DMT and turn into total zombies for hours.
[UK]J. Mandelkau Buttons 16: Ken Kesey and the Merry Pranksters turn on the Angels to LSD, DMT, and Christ knows what.
[Aus]J. Birmingham Tasmanian Babes Fiasco (1998) 227: A considerable stash of marijuana, acid and DMT.
[US]ONDCP Street Terms 8: DMT — Dimethyltryptamine.