/ ˈkʌmbæk; NAmE / noun
1.
[ usually sing. ] if a person in public life makes a comeback , they start doing sth again which they had stopped doing, or they become popular again :
an ageing pop star trying to stage a comeback
2.
if a thing makes a comeback , it becomes popular and fashionable or successful again
3.
( informal ) a quick reply to a critical remark
SYN retort
4.
a way of holding sb responsible for sth wrong which has been done to you :
You agreed to the contract, so now you have no comeback.