What does Papi stand for?

Papi - Aemilius Papinianus - Deceased, 212 - Authority cited in pre-1607 legal work (DSA)

Papirius Justus - Flourished, 2nd century - Authority cited in pre-1607 legal work (DSA)

Pacific Pigeon - North American bird banding code (BIBA)

Passenger Pigeon - Common English name - Scientific name: Ectopistes Migratorius - American Ornithologists Union four-character bird identification (IBP)

Polymethylene Polyphenyl Isocyanate (EDCT)

Precision Approach Path Indicator - FAA (TAG)

Professional Association of Pet Industries (EA)