Begin a filling meal (6)
I believe the answer is:
launch
'begin' is the definition.
(I know this)
'a filling meal' is the wordplay.
I cannot really understand how this works, but
'a' is present in the answer.
'meal' could be 'lunch' (lunch is a kind of meal) and 'lunch' is located in the remaining letters.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for launch that I've seen before include "Set up - found" , "Initiate; a boat" , "Fire (a rocket)" , "Send on course, ship or book" , "Boat; put in the water" .)