Meanings
Unknown. Sometimes claimed to refer to Church taxes paid to Westminster Abbey (originally called Collegiate Church of Saint Peter at Westminster) that were sent to repair St. Paul's Cathedral in the mid 1500s,[1] though records exist of the phrase since about 1450.[2]
How to pronounce "rob Peter to pay Paul":
AU
To use resources that legitimately belong to or are needed by one party in order to satisfy a legitimate need of another party, especially within the same organization or group; to solve a problem in a way that makes another problem worse, producing no net gain.