grit

nouns

a hard coarse-grained siliceous sandstone
grit, gritrock, gritstone
is derived from
gritty
fortitude and determination
"he didn't have the guts to try it"
backbone, grit, gumption, guts, moxie, sand
is derived from
gritty

verbs

cover with a grit
"grit roads"
grit
is a type of (narrower)
put a coat on; cover the surface of; furnish with a surface
"coat the cake with chocolate"
coat, surface
clench together
"grit one's teeth"
grit
is a type of (narrower)
squeeze together tightly
"clench one's jaw"
clench