tuff /tuf, tŭf/

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

• colour bars
• colour-blind
• colour blindness
• colour code
• colour-code
• colour-coded
• colour codes
• colour-codes
• colour-coding
• colour contamination
• colour contrast
• colour contrasts
• colour correction
• coloured
• coloured pencil
• coloured pencils
• coloureds
• colourer
• colourers
• colourfast
• colour fastness
• colour film
• colour filter
• colour filters
• colourful