Dollars, slangily (5)
I believe the answer is:
bucks
'dollars slangily' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for bucks that I've seen before include "Male antelopes" , "Goes against" , "Animals; a county (abbr.)" , "used for gambling in Reno?" , "Counters" .)