Definition of "Grade" :
noun: a variety of cattle produced by crossbreeding with a superior breed
noun: the gradient of a slope or road or other surface
"The road had a steep grade."
noun: a position on a scale of intensity or amount or quality
"A moderate grade of intelligence."
noun: the height of the ground on which something stands
"The base of the tower was below grade."
noun: a number or letter indicating quality (especially of a student's performance)
"Grade A milk."
noun: a degree of ablaut
noun: a body of students who are taught together
noun: one-hundredth of a right angle
noun: a relative position or degree of value in a graded group
"Lumber of the highest grade."
verb: determine the grade of or assign a grade to
verb: assign a grade or rank to, according to one's evaluation
verb: assign a rank or rating to
verb: level to the right gradient