https://www.merriam-webster.com/dictionary/petty%20officer%20first%20class
PETTY OFFICER FIRST CLASS Definition & Meaning - Merriam-Webster
The meaning of PETTY OFFICER FIRST CLASS is an enlisted member of the navy or coast guard ranking above a petty officer second class and below a chief petty...
petty officer first classdefinitionmeaningmerriamwebster