Definition of roller-coaster
- an entertainer's roller-coaster career
We went for a ride on the roller coaster.
The divorce was an emotional roller coaster for both of them.
: a ride at an amusement park which is like a small, open train with tracks that are high off the ground and that have sharp curves and steep hills
: a situation or experience that involves sudden and extreme changes
What made you want to look up roller-coaster? Please tell us where you read or heard it (including the quote, if possible).