kaartjie, n. — Green’s Dictionary of Slang

kaartjie n.

also kachie, kaitchee, katjie, kartje

[Afk. kaartjie, a ticket, a card, in turn f. UK card, a small measure of opium or Mex. Sp. cachuca, a capsule of drugs, which is f. Chilean sl. cachuca, a small comet]

(S.Afr. drugs) a very small measure of cannabis.

1952		‘Mr Drum’ in Drum (Johannesburg) Sept. 12: Scientifically known as Indian hemp, dagga [...] is known in the slang as [...] ‘tree of knowledge’, ‘parcel’, ‘’n katjie’, ‘stops’, ‘boom’, [etc.].
1963		L.F. Freed Crime in S. Afr. 140: The street-corner loafers, with their pockets crammed with dagga kartjes.
1978		C. Van Wra in Staffrider 1:2 37: Can we have so two kachies, please ... Make it three ... ; I wanna get lekker blou tonight... Tell ou Blare to give three kachies dagga [...] Sorry, gents. Die boom is leeg... Not even a kachie? [DSAE].
1978		L Barnes in The 1820 51:12 19: He is referring to the practice of preparing a kaitchee (zani or dagga cigarette) [DSAE].
1979		Staffrider 2:3 24: A police sergeant at a roadblock [...] found four kaartjies of zol in my bag, and arrested me [DSAE].
1984		D. Pinnock Brotherhoods 28: The dagga is [...] distributed by countless runners, mostly in the form of kaartjies, which cost only sixpence [DSAE].