On Hold Meaning

Example :   This project is on hold until we can get more information.Waiting on a telephone call.  I have been on hold for 45 minutes listening to a recording about how important my call is to them.On reserve; being held for someone.  I have a book on hold for me at the library.Pertaining to a telephone hold state.1999, New scientist:  Now James Kellaris, a professor of marketing at the University of Cincinnati, reports that the sexes respond differently to onhold music.