A man who investigates complaints and mediates fair settlements, especially between aggrieved parties such as consumers or students and an institution or organization.
A government official, especially in Scandinavian countries, who investigates citizens' complaints against the government or its functionaries.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.