Green’s Dictionary of Slang

green n.2

[the colour; whether of currency, marijuana or glass bottles]

1. [late 19C+] (US, also greens, welcome green) money, dollar bills.

2. [20C+] a $1 bill; thus often in pl.

3. [1950s+] (US drugs, also green grass, Miss Green) marijuana, sometimes seen as low in resin and thus a weak strain.

4. [1970s+] phencyclidine.

5. [1990s+] (Aus.) Victoria bitter beer.

6. see green money under green adj.1