Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for tuffer
Historical Examples of tuffer
British Dictionary definitions for tuffer
Derived Formstuffaceous (tʌˈfeɪʃəs), adjective
a rock formed by the fusing together on the ground of small rock fragments (less than 2 mm across) ejected from a volcano
Word Origin for tuff
C16: from Old French tuf, from Italian tufo; see tufa
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for tuffer
advertiser's spelling of tough (adj.), attested by 1940.
Online Etymology Dictionary, © 2010 Douglas Harper
A rock made up of particles of volcanic ash, varying in size from fine sand to coarse gravel.
The American Heritage® Science Dictionary
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