GRADE (2)

Grade, v. t. [imp. & p. p. Graded; p. pr. & vb. n. Grading.] 1. 1. To arrange in order, steps, or degrees, according to size, quality, rank, etc.
2. 2. To reduce to a level, or to an evenly progressive ascent, as the line of a canal or road.
3. 3. (Stock Breeding) To cross with some better breed; to improve the blood of.