Green’s Dictionary of Slang

hop n.2

[SE hops, the main constituent of beer]

1. [mid-19C+] (also hops) beer [later use is Aus/N.Z./US black].

2. [1900s] (US prison) tea.

In compounds

hophead (n.)

see separate entry.

hop joint (n.) [joint n. (3b)]

[late 19C+] (US) a saloon bar; also attrib.

hop shop (n.)

[late 18C] a tavern.

In phrases

go the hops (v.)

[1940s–50s] (Aus.) to enjoy drinking beer.

on the hops

[1920s–60s] drinking.