noun A steep, sharply curving elevated railway with small open passenger cars that is operated at high speeds as a ride, especially in an amusement park.
noun An action, event, or experience marked by abrupt, extreme changes in circumstance, quality, or behavior: "the demographic roller coaster caused by the baby boom” (American Demographics).
An amusement railroad of varying design in which open cars coast by gravity over a long winding track in a closed circuit, with steep pitches and ascents, and in some cases loops in which the cars are briefly upside-down; typically, the cars are pulled by a chain device to the top of the first peak, after which gravity and momentum provide the only propulsive forces. In some cases, the cars are suspended from a monorail rather than resting on a track, and such cars may be made to swing outward at an angle near to the horizontal. It is a popular amusement at many amusement parks, but is sufficiently frightening to some people that they refuse to ride in one.
The Sojourner Truth was a great ride, even in the Bering Sea, also known as the Birthplace of Winds, where boxcar lows beginning in Kamchatka regularly turned it into a roller coaster for every ship within five hundred miles.
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Blindfold Game
As a boy in New Orleans, he had spent more than a few happy hours at Lake Ponchartrain, back when the Zephyr was still the scariest roller coaster in the country.
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F ;SF; - vol 086 issue 02 - February 1994
I was on a roller coaster that was about to jump the tracks when Ripinsky decided to bail out That was around nineteen eighty He nodded.
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Marcia Muller - [16] A Wild and Lonely Place
We rode a modified roller coaster and screamed and held on to each other.
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VC Andrews - Broken Wings
Overhead, a roller coaster swooshed down like an avalanche, excited screams and laughter tumbling after like loose scree.
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Ellery Queen's Mystery Magazine, March-April 2005