The term "inch cubes" refers to a unit of measurement used in construction and engineering. It is defined as the volume of material that can be compacted into an area measuring one square inch when subjected to pressure or compaction. In other words, it represents the amount of soil, sand, gravel or any other granular material that can fit into a one-inch cube under certain conditions. This unit is commonly used in calculations related to earthwork and excavation volumes, as well as for determining the quantity of materials needed for various construction projects.