Green’s Dictionary of Slang

jolt n.

1. in context of drink or drugs.

(a) [20C+] (US drugs) a measure of a drug as taken by a user, esp. an injection of a narcotic; occas. of a non-recreational drug; thus overjolt

(b) [20C+] a stiff drink of spirits, esp. brandy, whisky or bourbon.

(c) [1920s+] (US) the effects of a drug or alcohol, a ‘kick’.

(d) [1950s] as non-drug ext. of sense 2c, a thrill.

2. [1910s+] (US Und.) a prison sentence, usu. with the number of years specified, e.g. a seven-year jolt.

3. [1940s] (US) a job.

4. [1950s] execution in the electric chair.

5. [1960s] (US) a train.

6. in non-custodial use of sense 2, a period of time within an institution, e.g. a hospital.

In phrases

overjolt (n.) [SE over + sense 1 above]

[1950s+] (US drugs) a drug overdose.

shake one’s jolt (v.)

[1950s] (US prison) to interfere with the way another person is dealing with their sentence.

SE in slang uses

In phrases

give someone the jolts (v.) [SE jolts, electric shocks]

[1970s] (US) to execute in the electric chair.