Green’s Dictionary of Slang

shakes, the n.

1. [mid-19C+] (also shivery shakes) delirium tremens, the shaking associated with an alcoholic who has been deprived of sufficient drink to achieve normality.

2. fever, e.g. malaria.

3. [1910s+] (also shakeroos) extreme terror, nervousness.

4. [1930s+] as sense 1 in the context of withdrawal from narcotics.

5. [1940s] a similar effect to sense 1, caused by excess coffee.

6. [1940s] palsy.

7. [1950s+] great excitement.

8. an addiction to (dice) gambling.