During the break, dad gets a meal (6)
I believe the answer is:
'a meal' is the definition.
('repast' can be a synonym of 'meal')
'during the break dad' is the wordplay.
'during' indicates putting letters inside.
'the break' becomes 'rest' (a rest is taking a break).
'dad' becomes 'pa' (synonyms).
'rest' enclosing 'pa' is 'REPAST'.
'gets' is the link.
(Other definitions for repast that I've seen before include "Feast, meal", "Something to eat", "Prates about meal", "Food - tapers (anag)", "A meal concerning time gone by".)