화산재가 굳어져 만들어진 가볍고 구멍이 많은 암석.
A light, porous rock formed by the consolidation of volcanic ash.
예문:
"The ancient structures were carved directly into the soft tuff cliffs."
"Geologists analyzed the layers of tuff to determine the date of the volcanic eruption."
매우 훌륭하거나 멋진 것을 뜻하는 속어.
Excellent, impressive, or very cool.
예문:
"That new leather jacket you bought is really tuff."
"He thought the custom car was the most tuff thing he had ever seen."