lung butter
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
Thick mucus that is coughed up; phlegm.
Register: slang
Where it’s used:
Used
American English
Examples
WAYNE: What I'd really like to do is something extraordinary. Something big. […] But I'll probably end up working at Great America, mopping up hurl and lung butter.
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “lung butter” mean?
Thick mucus that is coughed up; phlegm.
Is “lung butter” formal or informal?
lung butter is generally slang.