List of slang (4)
I believe the answer is:
cant
I believe this clue is a double definition.
'list' is the first definition.
(I've seen this before)
'slang' is the second definition.
(I know that slang can be written as cant)
'of' is the link.
(Other definitions for cant that I've seen before include "peculiar talk" , "Hypocritical or insincere talk" , "tilt" , "Special jargon of a group" , "of words with specialised meaning" .)