Quick answer
Papa is a girl name meaning "earth".
Meaning and history
The name means "earth" in Māori. In Māori and other Polynesian mythology Papa or Papatuanuku was the goddess of the earth and the mother of many of the other gods. She and her husband Rangi, the god of the sky, were locked in a tight embrace. Their children decided to separate them, a feat of strength accomplished by the god Tāne.
Notes and context
Usage: polynesian mythology