grader

/ˈɡreɪdər/
noun
  1. A student in a particular grade level at school.
    • My sister is a fifth grader this year.
    • The school held a special event for all first graders.
    • Each grader received a report card at the end of the term.
  2. A machine used to level or smooth a surface, such as a road or construction site.
    • After the storm, a grader was brought in to clear the debris.
    • The operator skillfully drove the grader across the uneven ground.
    • The construction crew used a grader to flatten the dirt road.
  3. A person or thing that grades or sorts items by quality or size.
    • She worked as a grader at the fruit packing plant.
    • The lumber grader inspected each board for defects.
    • The egg grader sorted the eggs by size on the conveyor belt.