Time to finish supper with heavy heart (3)
I believe the answer is:
era
'time' is the definition.
(an era is a period of time)
'finish supper with heavy heart' is the wordplay.
'finish supper' becomes 'ea' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'with' is an insertion indicator.
'heavy' becomes 'burde*' (I've seen this before).
'heart' means to look at the middle letters.
The middle of 'burde' is 'r'.
'ea' going around 'r' is 'ERA'.
'to' acts as a link.
Can you help me to learn more?
(Other definitions for era that I've seen before include "Long period of time" , "Distinct period in history" , "Long historic period" , "quite some time" , "Epoch, period" .)