second to none
Proposed by a contributor, not yet supported by evidence.
Meaning · English
Heroin.
Register: slang
Where it’s used:
Used
American English
Examples
The heroin, which police officials said had been measured at purity levels as high as 80 percent, is being sold under brand names like Unforgettable, Second to None, Black Beauty and Al Capone.
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 “second to none” mean?
Heroin.
Is “second to none” formal or informal?
second to none is generally slang.