hold something over phrasal verb ( see also ↑ hold )
1 . [usually passive] formal to do or deal with something at a later time:
The matter was held over for further review.
⇨ ↑ holdover
2 . hold something over somebody to use something bad that you know about someone to make them do what you want:
He knows I’ve been in prison and is holding it over me.
3 . be held over especially American English if a play, film, concert etc is held over, it is shown for longer than planned because it is very popular