Cincinnati baseball team (4)
I believe the answer is:
reds
'cincinnati baseball team' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for reds that I've seen before include "Tidies up" , "First snooker balls to be potted" , "Scarlet and crimson, say" , "Colourful communists" , "Colours for communists" .)