1. to form an arch over something; to span or bridge over
2. to have controlling influence over; to encompass or dominate
Usage: often used in abstract contexts

Examples

• The stone bridge overarches the narrow river.
• Ancient trees overarch the winding path through the forest.
• A single theme overarches all of her novels.
• The company’s mission statement overarches every department’s goals.
• Gothic arches overarch the cathedral’s main entrance.
• His philosophical beliefs overarch his approach to teaching.