What does the word DEF mean as in Def Comedy or Mos Def?

Answer:
It comes from the word definately. So So Def Recordings, Def Leopard, Def Jam Recordings also has def in their name.

Def Leppard's name comes from an intentional misspelling of the words Deaf Leopard.
First answer by ID3428045819. Last edit by TheBassPlayer668. Contributor trust: 33 [recommend contributor recommended]. Question popularity: 4 [recommend question].