main
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
Ellipsis of mainline (“to inject (a drug) directly into a vein”).
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).
Common questions
What does “main” mean?
Ellipsis of mainline (“to inject (a drug) directly into a vein”).
Is “main” formal or informal?
main is generally slang.