...delivering starters of black or white fish (7)
I believe the answer is:
bowling
'delivering' is the definition.
Although both the answer and definition are present participle verbs, I cannot understand how they can define each other.
'starters of black or white fish' is the wordplay.
'starters of' indicates taking the first letters.
'fish' becomes 'ling' (ling is a kind of fish**).
The initial letters of 'black or white' is 'bow'.
'bow'+'ling'='BOWLING'
Can you help me to learn more?
(Other definitions for bowling that I've seen before include "Game" , "Sport" , "-- Alley; -- green" , "getting out" , "making a delivery" .)