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.
B. 1  Bainbridge Township, Geauga County, Ohio. 2  Ballville Township, Sandusky County, Ohio. 3  Barlow Township, Washington County, Ohio.  Bartlow Township, Henry County, 1  Ohio. Batavia Township, Clermont County, Ohio.  Bath Township, Allen County, 1  Ohio. Bath Township, Greene County, 2  Ohio. Bath Township, Summit County,  Ohio.