Meaning of TUFF in English

TUFF

n.

Pronunciation: ' t ə f

Function: noun

Etymology: earlier tuph, tuft porous rock, from Middle French tuf, from Old Italian tufo

Date: 1815

: a rock composed of the finer kinds of volcanic detritus usually fused together by heat

– tuff · a · ceous \ ˌ t ə - ' f ā -sh ə s \ adjective

Merriam Webster Collegiate English Dictionary.      Merriam Webster - Энциклопедический словарь английского языка.