Underbed
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 An underlying base that supports a bed or foundation.
"It has an underbed of slate and a cover of hard shales which contains seams of sandstone and form a bluff."
Example
More examples"It has an underbed of slate and a cover of hard shales which contains seams of sandstone and form a bluff."
Etymology
From under- + bed.