(programming, languages) An entity of which the value can be passed as a parameter, but that can neither be returned from a function, nor be assigned to a variable. (Used by Raphael Finkel, the first-class object does not need to have run-time constructability according to his definition.)

(Canada, Navy) A non-commissioned officer in the Canadian Forces Maritime Command, ranking above master seaman and below petty officer first class.

plural of petty officer second class

plural of chief petty officer second class

(Canada, Navy) A warrant officer in the Canadian Forces Maritime Command, ranking above petty officer first class and below chief petty officer first class.