can have one of the following meanings.
The mantra is OM
MANI PADME HUM.
Pronounced in Tibet OM MANI PE ME HUM.
Mani is unusual because lunar deities
tend to be female, nearly universally, probably because of the connection between menstruation
and the phases of the moon.
See also Vidfinn for a hypothesis about the source of the nursery rhyme called Jack and Jill.