అర్థం : Anything characterized by abrupt and extreme changes (especially up and down).
ఉదాహరణ :
The economy has been on a roller coaster all year.
అర్థం : Elevated railway in an amusement park (usually with sharp curves and steep inclines).
పర్యాయపదాలు : big dipper, chute-the-chute
Roller coaster meaning in Telugu.