Green’s Dictionary of Slang

pothead n.2

[pot n.5 + -head sfx (4)]

(drugs) a smoker of marijuana or hashish.

[US]J. Gelber Connection 38: One of them turns out to be a pot-head.
[US]M. Braly Shake Him Till He Rattles (1964) 83: But you look clean as far as the heavy goes. That’s where the real heat is. As for one pothead more or less ...
[US] letter in Edelman Dear America (1985) 6 Sept. 150: The supposed ‘pot heads’ are much easier to work with, and more pleasant [...] and more intelligent than the redneck faction of boozers!
[US](con. 1940s–60s) H. Huncke ‘Spencer’s Pad’ in Eve. Sun Turned Crimson (1980) in Huncke Reader (1998) 98: Pimps and wise guys and junkies and potheads and just people.
[US](con. 1986) G. Pelecanos Sweet Forever 75: A new generation of kids [...] trying to separate themselves from the beards and potheads who came before them.
[UK]Guardian Rev. 12 May 7: By the time potheads were appearing regularly in the movies it was the 80s.
[US]Mad mag. Oct. 45: The city is engulfed in a perpetual haze of smoke from all the potheads.
[Aus]L. Redhead Cherry Pie [ebook] It never ceased to amaze me, the way potheads immediately recognised their own kind.
[UK]K. Richards Life 434: Oh you wouldn’t understand. Oh really? I heard that phrase from potheads many years ago.
[US]P. Beatty Sellout (2016) 84: ‘You know who was a pothead,’ he said, refusing the doobage.