Taking a meal round in the boat (6)
I believe the answer is:
launch
'round in the boat' is the definition.
'launch' can be an answer for 'boat' (launch is a kind of boat). I'm not sure about the 'round in the' bit.
'taking a meal' is the wordplay.
'taking' is an insertion indicator.
'meal' becomes 'lunch' (lunch is a kind of meal).
'a' inserted into 'lunch' is 'LAUNCH'.
Can you help me to learn more?
(Other definitions for launch that I've seen before include "starter?" , "Send a vessel into water" , "pleasure-boat" , "Rocket journey's starting point" , "Start - motor-driven boat" .)