Collins COBUILD Advanced Learner's English Dictionary - white-knuckle

1. In a fairground, a white-knuckle ride is any large machine that people ride on which is very exciting but also frightening. ...white-knuckle rides such as the rollercoaster. ADJ: ADJ n 2. A white-knuckle experience is something that you find very exciting but also very frightening. ...a hellish white-knuckle ride through the heavy London traffic. ADJ: ADJ n