roller coaster

roller coaster

or roll·er·coast·er (rōl′ər-kō′stər)n.1. 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.2. 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).

roll′er coast`er

n. 1. a small railroad, esp. in an amusement park, having a train with open cars that moves along a high, sharply winding trestle built with steep inclines. 2. any phenomenon, period, or experience characterized by violent ups and downs or fluctuations. [1885–90]

Thesaurus

Noun	1.	roller coaster - anything characterized by abrupt and extreme changes (especially up and down); "the economy has been on a roller coaster all year"Sturm und Drang, upheaval, turbulence - a state of violent disturbance and disorder (as in politics or social conditions generally); "the industrial revolution was a period of great turbulence"
	2.	roller coaster - elevated railway in an amusement park (usually with sharp curves and steep inclines)chute-the-chute, big dipperelevated, 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 levelhypercoaster - a roller coaster that goes up 200 feet or higher and can catapult riders from 0 to 70 mph in 4 seconds by motors originally designed to launch rocketsride - a mechanical device that you ride for amusement or excitement

Translations

Achterbahnmontagne russeotto volante