Green’s Dictionary of Slang

bowl n.

(drugs)

1. [1930s+] an opium pipe.

2. [1970s+] a pipe used for smoking marijuana; thus a pipeful of marijuana [? imported by veterans of the Vietnam War (1964–75), where pipes, rather than cigarettes were the preferred means of smoking].

3. [1990s+] a pipe of crack cocaine.

In phrases

bokin a smowl (n.) [joc. reversal of ‘smoking a bowl’]

[1980s+] (US drugs) the smoking of a pipe or other container filled with cannabis.

smoke a bowl (v.) (also smoke some bowl)

[1960s+] to smoke marijuana.

SE in slang uses

In phrases