Search Result：roller coaster
roller coaster 
(TTS Sound)
(TTS Sound)Overview of noun roller_coaster
The noun roller coaster has 2 senses
- roller coaster -- (anything characterized by abrupt and extreme changes (especially up and down); "the economy has been on a roller coaster all year")
- roller coaster, big dipper, chute-the-chute -- (elevated railway in an amusement park (usually with sharp curves and steep inclines))