Definition of rock bed in English:

rock bed

noun

  • 1A bed of rock; a rocky floor, bottom, or base; (in early use) specifically solid rock underlying loose deposits such as soil or alluvium; bedrock.

  • 2Figurative. The fundamental principles on which something is based.

Origin

Late 18th century; earliest use found in James Beresford (1764–1840), writer. From rock + bed.

Pronunciation

rock bed

/ˈrɒkbɛd/