Definition & Meaning of "piff"in English

What does "piff" mean in British slang?

The structure is a simple adjective of uncertain origin, possibly from "piff" as a shortened form of "piffle" (nonsense) but repurposed positively, or from its use in describing high quality cannabis. It is used in British Multicultural London English (MLE) and UK slang to mean very attractive, high quality, or appealing, similar to "peng" or "leng." People typically say "That jacket is piff" or "She's piff." The term originated in early 2000s London street and grime culture, often associated with describing good weed before expanding to general use.