A non-commissioned officer in the Royal Navy, ranking above petty officer and below warrant officer class 2.
A warrant officer belonging to one of the two classes of chief petty officer: chief petty officer first class and chief petty officer second class.
A non-commissioned officer in the United States Navy and United States Coast Guard, ranking above petty officer first class and below senior chief petty officer.
An officer holding rank by virtue of a warrant rather than a commission.
An officer assigned to execute warrants and other writs.