jacks
In real, traceable use. Part of the curated seed collection; community review is coming.
Sense 1
Meaning · English
A pair of jacks.
Register: slang
Where it’s used:
Used
American English
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Sense 2
Meaning · English
Heroin tablets (from "jacks and jills" = pills)
Register: slang
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “jacks” mean?
A pair of jacks.
Is “jacks” formal or informal?
jacks is generally slang.