Definition of "grader" in English

noun

1. A machine used in road maintenance, construction, and mining for leveling large surfaces.

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