tuff /tuf, tŭf/

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

• birthnights
• birth parent
• birth parents
• birth pill
• birth pills
• birthplace
• birthplaces
• birth rate
• birth rates
• birthright
• birthrights
• births
• birth sign
• birth signs
• birthstone
• birthstones
• birth-strangled
• birth weight
• birth weights
• birthwort
• birthworts
• biryani
• biryanis
• bis
• BIS