Meaning of TUFF in English

TUFF

[ tʌf ]

■ noun a light, porous rock formed by consolidation of volcanic ash.

Derivatives

~aceous -'feɪʃəs adjective

Origin

C16: via Fr. from Ital. tufo , from late L. tofus , L. tophus (see tophus ).

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.