grader

grader
/gray"deuhr/, n.
1. a person or thing that grades.
2. a pupil of a specified grade at school: a fourth grader.
3. a machine for grading.
[1840-50, Amer.; GRADE + -ER1]

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▪ excavation vehicle
      in excavation, precision finishing vehicle for final shaping of surfaces on which pavement will be placed. Between its front and rear wheels a grader carries a broad mechanically or hydraulically controlled blade that can be extended from either side. Either end of the blade can be raised or lowered. Graders may be used for shallow ditching, but most models are used to assist other earth-moving equipment and to smooth roads, fills, and cuts.

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Universalium. 2010.

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Look at other dictionaries:

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  • grader — 1868, of machines; 1870, of persons, agent noun from GRADE (Cf. grade) (v.) …   Etymology dictionary

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