[grey-der] /ˈgreɪ dər/

a person or thing that .
a pupil of a specified at school:
a fourth grader.
a machine for .
a person or thing that grades
a machine, either self-powered or towed by a tractor, that levels earth, rubble, etc, as in road construction

1868, of machines; 1870, of persons, agent noun from grade (v.).


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