Tuff (noun) Definition, Meaning & Examples

adjective Slang.
  1. tough (def. 13).
noun Geology.
  1. a fragmental rock consisting of the smaller kinds of volcanic detritus, as ash or cinder, usually more or less stratified.
noun
  1. a rock formed by the fusing together on the ground of small rock fragments (less than 2 mm across) ejected from a volcano
    Tuff (noun) Definition, Meaning & Examples

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