Urban Dictionary focus (5)
I believe the answer is:
slang
'urban dictionary focus' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for slang that I've seen before include "Informal language used by a set of people" , "Berate" , "Patois" , "See 15" , "Informal language - jargon" .)