grit

IPA: grˈɪt

A collection of hard small materials, such as dirt, ground stone, debris from sandblasting or other such grinding, or swarf from metalworking.
Sand or a sand–salt mixture spread on wet and, especially, icy roads and footpaths to improve traction.
Inedible particles in food.
A measure of the relative coarseness of an abrasive material such as sandpaper, the smaller the number the coarser the abrasive.
(geology) A hard, coarse-grained siliceous sandstone; gritstone. Also, a finer sharp-grained sandstone, e.g., grindstone grit.
Strength of mind; great courage or fearlessness; fortitude.
(usually in the plural) Husked but unground oats.
(usually in the plural) Coarsely ground corn or hominy used as porridge.
(Canadian politics) A member or supporter of the Liberal Party of Canada or one of its provincial wings (except for the Quebec provincial wing).

Apparently only in grit one's teeth: to clench, particularly in reaction to pain or anger.
To cover with grit.
(obsolete, intransitive) To give forth a grating sound, like sand under the feet; to grate; to grind.

Examples of "grit" in Sentences

She showed incredible grit and determination as she battled through adversity to reach her goals
The marathon runner's grit and perseverance allowed him to push through the pain and finish the race
Despite facing numerous challenges, she tackled each one with grit and never gave up
It takes a lot of grit to start your own business and face the uncertainty that comes with it
His success can be attributed to his work ethic and grit, always willing to put in the effort to achieve his dreams