sand or gravel; rough, hard particles.-the coarse part of meal.-grain, esp. oats or wheat, hulled and coarsely ground; in high milling, fragments of cracked wheat smaller than groats.-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.-structure, as adapted to grind or sharpen; as, a hone of good grit.-firmness of mind; invincible spirit; unyielding courage; fortitude.-to give forth a grating sound, as sand under the feet; to grate; to grind.-to grind; to rub harshly together; to grate; as, to grit the teeth.