juice

   1. (the juice) intoxicants

   The common modern use probably came from the literal meaning, liquid of fruit, rather than from the Scottish juice of the bear, whisky. Juniper juice was gin but the juice can be any spirits:

    The cops will probably want you to stay off the juice. (Deighton, 1972)

   And as a verb:

    ... would gather after a long day in the 10 shop to juice a little. (Herr, 1977 — in fact they gathered in the 10 shop after a long day elsewhere)

   Whence juiced, drunk, juice head, a drunkard, and juice joint, a bar.

   2. American

   a payment made or demanded illegally

   What comes in if you squeeze¹:

    The bookie was a big operator and sent his juice money directly to City Hall. (Weverka, 1973 — 1 suspect he sent it direct to City Hall, without an intermediary, but not necessarily promptly)

   Whence the juice dealer, or loan shark, who uses for collection a hoodlum called a juice man.

   3. semen

   Not blood, sweat, or tears:

    There was a moment just before the juice from him was in my mouth, when I already had the taste of it. (R. Thompson, 1996)