Definition of ’pon in English:

’pon

Pronunciation /pän/ /pən/ /pɑn/

preposition

short for upon, especially in poetic use or to represent dialect
‘'Twas while I was 'pon the high seas, I was accosted by the pirate ginger beard!’
short for upon, especially in poetic use or to represent dialect
‘My other project developed out of this, for those not-so-rare occasions that a duppy (Jamaican ghost) was 'pon the computer, and Windows just wouldn't even think about booting.’

Pronunciation

’pon

/pän/ /pən/ /pɑn/