Break in which old man gets meal (6)
I believe the answer is:
repast
'meal' is the definition.
(repast can mean a meal)
'break in which old man' is the wordplay.
'break' becomes 'rest' (a rest is taking a break).
'in which' is an insertion indicator.
'old man' becomes 'pa' (both can mean someone's father).
'rest' enclosing 'pa' is 'REPAST'.
'gets' is the link.
(Other definitions for repast that I've seen before include "Banquet" , "Something to eat" , "Prates about meal" , "Food - tapers (anag)" , "A formal sort of meal" .)