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The definition of bedrock

3 Definitions of: bedrock

1. noun, the solid unweathered rock that lies beneath the loose surface deposits of soil, alluvium, etc
2. noun, basic principles or facts (esp in the phrase get down to bedrock)
3. noun, the lowest point, level, or layer
4. Show me some examples of this word: bedrock
5. Show me the etymology of the word: bedrock

Synonyms:	bottom, rule, basis, basic, principle, essential, roots, core, fundamental, cornerstone	And more...

From Collins