hold over

1.  Postpone or delay, as in Let's hold this matter over until the next meeting. [Mid-1800s]
2.  Keep something in a position or state beyond the normal period, as in The film was to be held over for another week. [First half of 1900s]
3.  Continue in office past the normal period, as in The committee chair held over until they could find a suitable replacement. [Mid-1600s]
4.  hold something over someone. Have an advantage or use a threat to control someone. For example, They knew he'd been caught shoplifting and were sure to hold it over him. [Second half of 1800s]

The verb has 3 meanings:

Meaning #1: intimidate somebody (with a threat)

Meaning #2: hold over goods to be sold for the next season
  Synonym: carry over

Meaning #3: hold back to a later time
  Synonyms: postpone, prorogue, put over, table, shelve, set back, defer, remit, put off