1. formed an arch over something; spanned or extended over in a curved shape
Usage: past tense of overarch
2. dominated or encompassed something in an overriding manner
Usage: past tense of overarch; figurative use

Examples

• The stone bridge overarched the rushing river below.
• Ancient trees overarched the narrow forest path.
• A rainbow overarched the valley after the storm.
• The cathedral’s vaulted ceiling overarched the entire nave.
• His ambition overarched all other considerations in his life.
• The company’s new strategy overarched multiple business divisions.