grader

Etymology

grade + -er

noun

  1. A machine used in road maintenance and construction for leveling large surfaces.
    The blade-grader is a long steel-framed carriage under which is fixed a steel blade capable of being tilted at various angles: its principal use is in trimming cutting-slopes. 1943 September and October, “Railway Construction and Operation at War Department Depots”, in Railway Magazine, page 262
  2. A machine used to sort food by size or quality.
  3. One who grades, or that by means of which grading is done or facilitated.
    the graders of a school examination
  4. (in combination) One who belongs to a certain grade at school.
    a first-grader

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