tuff /tuf, tŭf/

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

tuffāˈceous adjective

• sirree
• sirrees
• sir-reverence
• sirring
• sirs
• sirtuin
• sirup
• siruped
• siruping
• sirups
• sirvente
• sirventes
• -sis
• sis
• SIS
• sisal
• sisal hemp
• sisal hemps
• sisals
• siseraries
• siserary
• sises
• siskin
• siskins
• siss