noun
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a number of people or things arranged so as to form a line; a row.
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any hierarchical system (as in the gradation in official hierarchy).
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a group of persons; a multitude.
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a congregation or assembly of merchants.
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a group of students taught together according to standing, subject, etc.; a class.
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stage, position, elevation or rank considered as one of the planes in a scale of values.
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a kind of medicinal plant.