Noun
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| roller coaster -
elevated railway in an amusement park (usually with sharp curves and steep inclines)
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big dipper,
chute-the-chute |
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elevated,
elevated railroad,
elevated railway,
overhead railway,
el a railway that is powered by electricity and that runs on a track that is raised above the street level
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ride a mechanical device that you ride for amusement or excitement
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| roller coaster -
anything characterized by abrupt and extreme changes (especially up and down); "the economy has been on a roller coaster all year"
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