3. pl. Grain, esp. oats or wheat, hulled and coarsely ground;
in high milling, fragments of cracked wheat smaller than
groats.
4. (Geol.) A hard, coarse-grained siliceous sandstone; as,
millstone grit; -- called also {gritrock} and {gritstone.}
The name is also applied to a finer sharp-grained
sandstone; as, grindstone grit.
5. Structure, as adapted to grind or sharpen; as, a hone of
good grit.
6. Firmness of mind; invincible spirit; unyielding courage;
fortitude. --C. Reade. E. P. Whipple.