English noun: roller coaster | |||
1. | roller coaster (state) anything characterized by abrupt and extreme changes (especially up and down) | ||
Samples | The economy has been on a roller coaster all year. | ||
Broader (hypernym) | Sturm und Drang, turbulence, upheaval | ||
2. | roller coaster (artifact) elevated railway in an amusement park (usually with sharp curves and steep inclines) | ||
Synonyms | big dipper, chute-the-chute | ||
Broader (hypernym) | el, elevated, elevated railroad, elevated railway, overhead railway, ride | ||
Narrower (hyponym) | hypercoaster | ||