Fill soil is used in constructing the hard-packed interior surface of the wall, tapig, and the terrace core, tābab, behind it; it is also used in constructing the hard-packed basin floor, pānad, of a pond field.
2
For someone (agent muɴ-, -umi-, -um-; s agent maN-) to fill in a stone wall (loc ref -an), i.e., the space behind it, with soil (theme i-), as described above.
Umiyādog: focus is on one who uses soil to fill the space behind a stone wall.