Indonesian

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Etymology

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Borrowed from Dutch riool (sewer), from Middle Dutch riole, probably from Middle French rigole (ditch, sewer), from Old French regol, from Middle Dutch regel (row), from Latin rēgula (straight line).

Pronunciation

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Noun

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riol (plural riol-riol, first-person possessive riolku, second-person possessive riolmu, third-person possessive riolnya)

  1. sewer: a pipe or system of pipes used to remove human waste and to provide drainage.

Further reading

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Middle English

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Adjective

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riol

  1. Alternative form of ryal