Tribute beginning for Omar Little (4)
I believe the answer is:
obit
'tribute' is the definition.
(I've seen this before)
'beginning for omar little' is the wordplay.
'beginning for' suggests taking the first letters.
'little' becomes 'bit' (I've seen this in another clue).
The initial letter of 'omar' is 'o'.
'o'+'bit'='OBIT'
(Other definitions for obit that I've seen before include "Short biography of someone who has died (abbr)" , "Passing information" , "Memorial biography (abbr)" , "Biographical death notice (abbr)" , "late anniversary" .)