Green’s Dictionary of Slang

1. vegetables, i.e. greens.

1992

R. Puxley Cockney Rabbit.

2. (S.Afr. drugs) marijuana.

1949

H.C. Bosman Cold Stone Jug (1981) II 27: The dagga habit was pretty strongly entrenched. [...] They also called it ‘Nellie’ or ‘grass’ [...] or ‘American green leaf’ or ‘pappegaai’.