What is the meaning of Grit?

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.

Small, hard, 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.

A hard, coarse-grained siliceous sandstone; gritstone. Also, a finer sharp-grained sandstone, e.g., grindstone grit.

Apparently only in grit one's teeth: to clench, particularly in reaction to pain or anger.

To cover with grit.

To give forth a grating sound, like sand under the feet; to grate; to grind.

Coarsely ground corn or hominy used as porridge.

Source: wiktionary.org

See also