an officer in a police force | an assistant with power to act when his superior is absent |
a commissioned military officer | someone authorized to exercise the powers of sheriff in emergencies |
an assistant with power to act when his superior is absent | a person appointed to represent or act on behalf of others |
an officer holding a commissioned rank in the United States Navy or the United States Coast Guard; below lieutenant commander and above lieutenant junior grade | a member of the lower chamber of a legislative assembly (such as in France) |