Definition of tuff
: a rock composed of the finer kinds of volcanic detritus usually fused together by heat
tuffaceousplay \ˌtə-ˈfā-shəs\ adjective
Recent Examples of tuff from the Web
The crew made its way around low-growing cactuses, through prickly and fragrant sage, over tuffs of wild grasses.
Warm season buffalo, dog-tuff or blue grama grass can be mowed every 10 to 20 days (lucky you). •
Here, on its slopes, all the island’s moai were carved from tuff (volcanic ash, which is easier to work with), before being transported as far as 11 miles away.
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Origin and Etymology of tuff
earlier tuph, tuft porous rock, from Middle French tuf, from Old Italian tufo
First Known Use: 1815See Words from the same year
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