1. A light porous rock of volcanic ashes cemented together; any similar rock.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• tuf,
• vuff,
• cff,
• auff,
• tufy,
• fughu,
• truff,
• yuff,
• ouff,
• luf,
• tiff,
• tgff,
• thff,
• goff,
• tpff,
• tofe,
• tufa,
• tufe,
• tufs,
• 6uff

• tuba,
• tup,
• tub,
• tube,
• tufa,
• tupi,
• TUBB.

The adjective form of "tuff" is "tough".

The plural of the "tuff" can be the "tuffs".

The singular of the "tuff" can be the "tuff".