from The Century Dictionary and Cyclopedia
- Capable of being eroded: as, an erosible rock.
Sorry, no etymologies found.
The magnitude of the monsoonal flood-flows of the major South Asian rivers, often in highly erosible channels, makes river control extremely difficult.
A very difficult drainage channel maintenance situation is encountered in some highly erosible clay soils.
Perhaps it had once been a pool in the slope, with the lower side thin and erosible.