The elbows of my favorite shirt are completely soiled with soil. How do you know the definition of the board word is "dirty"?

Respuesta :

Soiled: 
1: to stain or defile
2: to make unclean especially superficially  <------ (that is the one)

Soil is also another term for dirt. So if you have soiled a shirt with dirt, that means to make it dirty.