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Definition of “roller coaster” - English Dictionary

"roller coaster" in American English

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roller coasternoun [C]

 us   /ˈroʊ·lər ˌkoʊ·stər/ (plural roller coasters)
a small railroad, esp. in an amusement park, with open cars that travel quickly along a steep, curved track that goes up and down over and over
A roller coaster is also a feeling, situation, or experience that changes very quickly: an emotional roller coaster
(Definition of roller coaster from the Cambridge Academic Content Dictionary © Cambridge University Press)







"roller coaster" in British English

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(Definition of roller coaster from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)

"roller coaster" in Business English

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roller coasternoun [S]

uk   us  
a situation in which prices, rates, etc. keep going up and down by large amounts very quickly: Last week the roller coaster of crude oil prices climbed to $89.47 on Thursday and $90 on Friday. Mortgage chaos sent the stock market on a roller coaster ride.
(Definition of roller coaster from the Cambridge Business English Dictionary © Cambridge University Press)
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