tuff /tuf, tŭf/

1. A rock composed of fine volcanic fragments and dust
2. Tufa or other porous rock (obsolete)

• ball-boys
• ball-breaker
• ball-breakers
• ball-breaking
• ball-buster
• ball-busters
• ball-busting
• ball cartridge
• ballclay
• ballclays
• ballcock
• ballcocks
• ball-dress
• ball-dresses
• balled
• balled-up
• ballerina
• ballerinas
• ballerine
• ballet
• ballet-dancer
• ballet-dancers
• ballet-dancing
• balleted
• ballet-girl