noun / verb
gravel
GRAV-uhl/ˈɡrævl/
Small loose stones used to cover surfaces.
Small loose stones form the gravel path and spill over its edge.

Etymology
Old French gravele was a diminutive of a word for sand or seashore, fitting gravel’s small, loose fragments. A deeper Celtic origin is possible, not established.
In context
the surface of your gravel driveway is made of loose stone over time some of that loose stone will get pushed off leading to erosion
More examples
- We gravel the muddy entrance to the parking lot.
- Rain washes gravel from the driveway into the ditch.
- The crew spreads a fresh layer of gravel around the shed.
Forms
gravel · gravels · graveled · graveling
gravelly adjective — Covered with or containing small stones.