Courage, fortitude, or strength.
The series of vertebrae, separated by disks, that encloses and protects the spinal cord, and runs down the middle of the back in vertebrate animals.
Any fundamental support, structure, or infrastructure.
Strength of mind; great courage or fearlessness; fortitude.
A hard, coarse-grained siliceous sandstone; gritstone. Also, a finer sharp-grained sandstone, e.g., grindstone grit.
A collection of hard small materials, such as dirt, ground stone, debris from sandblasting or other such grinding, or swarf from metalworking.
Coarsely ground corn or hominy used as porridge.
Inedible particles in food.
Husked but unground oats.
A measure of the relative coarseness of an abrasive material such as sandpaper, the smaller the number the coarser the abrasive.
Sand or a sand–salt mixture spread on wet and, especially, icy roads and footpaths to improve traction.
To cover with grit.
Apparently only in grit one's teeth: to clench, particularly in reaction to pain or anger.