A terrace core, i.e., the space between the hard-packed earth surface, tapig, of a stone wall and the natural earth or rock slope on which the terrace is constructed. This space is filled with soil, ādog, and gravel, gāngal.
2
For someone (agent muɴ-, -um-, umi-; s agent maN-) to fill a depression (loc ref) with soil (theme i-), as a depression in a yard; a terrace core, as described above.