performing or functioning in the best possible manner with the least waste of time and effort; having and using requisite knowledge, skill, and industry; competent; capable: a reliable, efficient assistant.
Marengo is a village in Morrow County, Ohio, United States. The population was 342 at the 2010 census. Marengo is south of Mount Gilead, the county seat.
The name is also assigned to the Cuyahoga River, which bisects the county. Cuyahoga County is included in the Cleveland-Elyria, OH Metropolitan Statistical Area. Former U.S. President James A. Garfield was born in what was Cuyahoga County's Orange Township.