Courage from dirt (4)
I believe the answer is:
grit
This could be a double definition.
'courage' is the first definition.
(I've seen this before)
'dirt' is the second definition.
The definition and answer can be both substances as well as being singular nouns.
Maybe there's an association between them I don't understand?
'from' acts as a link.
Can you help me to learn more?
(Other definitions for grit that I've seen before include "Fragments to sprinkle on roads" , "Gravelly courage" , "Pluck; sand particles" , "Grains of rock or sand" , "Small hard particles - courage" .)