An orderly stacking of rocks or earth (as used for the foundation of a house on the seashore, for a wharf, for a retaining wall surrounding a grave or rice field, etc.).
This grave has a nice rock wall around it.
To make an orderly stack of rocks or earth.
The -un imp. focuses on the object used to make a stack. The -an imp. focuses on the patient that the stack is being made on. The pa--un imp. focuses on adding some more of an object to an existing stack.
They stacked rocks in order to make a wharf.
Make a rock wall around that grave.