[mass noun] A kind of hard confectionery typically made of masses of crystallized sugar.
- ‘They had rock candy and other sucky candies that all looked good.’
- ‘Most importantly, they made the best crystallized rock candy in the Caleasto.’
- ‘If you don't have weeks to spare for sugar crystals to form on string, you can order rock candy in bulk from us.’
- ‘Learn about different sugar solutions, including how to make rock candy, at the Sugar in Candy Making site.’