GRIT

grit. Grit, n. the coarse part of meal, sand, dust, a fish, an argillaceous earth or stone

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Grit (?), n. [[OE, greet, greot, sand, gravel, AS. greót grit, sant, dust; akin to OS griott, OFries. gret gravel, OHG. grioz, G. griess, Icel. grjōt, and to E. groats, grout. See Groats, Grout, and cf. Grail gravel.]] 1. 1. Sand or gravel; rough, hard particles.
2. 2. The coarse part of meal.
3. 3. pl. Grain, esp. oats or wheat, hulled and coarsely ground; in high milling, fragments of cracked wheat smaller than groats.
4. 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. 5. Structure, as adapted to grind or sharpen; as, a hone of good grit.
6. 6. Firmness of mind; invincible spirit; unyielding courage; fortitude. C. Reade. E. P. Whipple.