In some cases it does contain crystals that formed prior to the eruption.
The homonym for tuff is "tough."
Tough is the same as rough; tuff means cool (ex:a tuff looking Mustang or a tuff record)
Tuff rocks are formed from volcanic ash and debris that have been compacted and cemented together. They are usually light in color and can contain fragments of volcanic glass, crystals, and other minerals. Tuff rocks are commonly found in areas with past volcanic activity and are often used for construction purposes due to their durability.
No, Tuff Hedeman is alive.
"Tuff" in Spanish is "toba"
Tuff Shed was created in 1981.
Tuff Shed's population is 1,000.
Tony Tuff was born in 1955.
Charles Tuff was born in 1855.
Charles Tuff died in 1929.
Tuff TV was created in 2009.
Tuff Love was created in 2008.