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English word
HYPHEN
WORDNET DICTIONARY
CIDE DICTIONARY
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WORDNET DICTIONARY
Noun roller coaster has 2 senses
- roller coaster(n = noun.state) - anything characterized by abrupt and extreme changes (especially up and down); "the economy has been on a roller coaster all year" is a kind of sturm und drang, turbulence, upheaval
- roller coaster(n = noun.artifact) big dipper, chute-the-chute - elevated railway in an amusement park (usually with sharp curves and steep inclines); is a kind of el, elevated, elevated railroad, elevated railway, overhead railway, ride
has particulars: hypercoaster
CIDE DICTIONARY
roller coaster,
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. [Webster 1913 Suppl.]