grit

Grit is a coarse, gravelly dust. If you don't rinse dried beans before you cook them, you may end up crunching grit between your teeth.

Grit is small, sandy pieces of rock or stone. Another way to use the word grit is to mean a determined, courageous attitude. If you have grit, you'll keep trying to climb a rock wall no matter how many times you slip and fall. Charles Portis's 1968 novel "True Grit" tells the story of a young girl in the 1800s who embodies this quality, persevering through extreme difficulty and struggle.

Primary Meanings of grit

1.
nv
a hard coarse-grained siliceous sandstone
cover with a grit
2.
vn
clench together
fortitude and determination
Full Definitions of grit
1

n a hard coarse-grained siliceous sandstone

Synonyms:
gritrock, gritstone
Type of:
sandstone
a sedimentary rock consisting of sand consolidated with some cement (clay or quartz etc.)

v cover with a grit

grit roads”
Type of:
coat, surface
put a coat on; cover the surface of; furnish with a surface
2

v clench together

grit one's teeth”
Type of:
clench
squeeze together tightly

n fortitude and determination

Synonyms:
backbone, gumption, guts, moxie, sand
Type of:
fortitude
strength of mind that enables one to endure adversity with courage