the.com/roller coaster

means A track-based ride that hauls you up high and then lets gravity fling you through drops, loops, and turns at speed.

from Possibly rooted in early winter sled rides down ice-covered wooden hills (popular in parts of Europe), where riders literally rolled on tracks of logs or rollers to slide back up. Some of the earliest American versions were mining and quarry cars repurposed for thrill-seekers, and the gravity railway rides at amusement parks in the late 1800s cemented the name — 'roller' for the wheeled cars, 'coaster' for the coasting plunge once the chain-lift lets go.