noun
: a person belonging to one of three classes of lowest rating among noncommissioned naval officers
a petty officer second class rates just below one of the first class and above one of the third class
noun
: a person belonging to one of three classes of lowest rating among noncommissioned naval officers
a petty officer second class rates just below one of the first class and above one of the third class
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012