noun / adjective
dirt
DIRT/dɜːrt/
Earth or other unwanted material soiling a surface.
Crumbly clods and fine grains form a small heap of dirt.

Etymology
The ancestor drit is associated with excrement; in Middle English, the word also covered filth, mud, and loose earth. That range underlies today's senses of soil and grime.
In context
too many gardeners refer to what they're growing in as dirt and dirt really is one of those throwaway works we make things dirty
More examples
- Please scrape the dirt off your boots before coming inside.
- Dirt collects in the narrow gaps between the tiles.
- This soap removes even stubborn dirt from your hands.
Forms
dirty adjective — Covered with dirt or other unwanted matter.