The word "penns" is a plural form of the noun "penn." It is spelled as "p-e-n-n-s" with a silent "s" at the end. In IPA phonetic transcription, it sounds like /pɛnz/. The pronunciation of "penns" is different from the singular form "penn" /pɛn/ as the "s" sound is added to show plurality. The word "penns" is commonly used when referring to a group of coins or paper money.