1. the solid rock that lies beneath loose deposits of soil or other material
Usage: geological
2. the fundamental principles or facts that something is based on
Usage: figurative

Examples

• The construction crew had to drill through several feet of soil before reaching bedrock.
• Geologists studied the bedrock formation to understand the area’s history.
• Trust is the bedrock of any successful relationship.
• The Constitution forms the bedrock of American democracy.
• Her strong work ethic was the bedrock of her success.
• The company’s bedrock principles include honesty and integrity.
• They built the foundation directly on bedrock for maximum stability.