roller coaster or roll·er·coast·er (rōlər-kō′stər)
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).
(click for a larger image)roller coaster
Magic Mountain roller coaster
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
Indo-European & Semitic Roots Appendices
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