(petrology) A light porous rock, now especially a rock composed of compacted volcanic ash varying in size from fine sand to coarse gravel.

Eye dialect spelling of tough.

plural of tuff

plural of Tuff

A surname.

Alternative form of calc-tufa

A clump of grass or similar vegetation; a small grass-covered mound. / (furniture) A large cushion which may have an internal frame, used as a low seat or stool.

Of the nature or texture of tuff.

plural of tuffet

Obsolete form of typhoon.