A boy on board making dishes (6)
I believe the answer is:
salads
'dishes' is the definition.
(salad is a kind of dish)
'a boy on board' is the wordplay.
'a boy' becomes 'Sal'.
'on board' becomes 'ads' (I can't justify this - if you can you should believe this answer much more).
'sal'+'ads'='SALADS'
'making' is the link.
Can you help me to learn more?
(Other definitions for salads that I've seen before include "Cold, dressed dishes" , "Leafy dishes" , "Dishes of usually uncooked vegetables" , "Leafy meals" , "Mixtures of lettuces etc." .)