noun \ˈtəf\

Definition of tuff

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


play \ˌtə-ˈfā-shəs\ adjective

Origin and Etymology of tuff

earlier tuph, tuft porous rock, from Medieval French tuf, from Old Italian tufo

First Known Use: 1815

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