Definition of touchstone
English to English noun - a basis for comparison; a reference point against which other things can be evaluated
The schools comply with federal standards.
They set the measure for all subsequent work.
source: WordNet 3.0 - Lydian stone; basanite; -- so called because used to test the purity of gold and silver by the streak which is left upon the stone when it is rubbed by the metal. See Basanite.
source: Webster 1913
Visual Synonyms 
Nearby Word
touchstone, touchdown, toadstone, touch system, testone, touch down, teston, toxication, taction, testoon, tectona, tight money, testimony, testation, toxostoma, testimonial, toxodon, tighten, tadzhikistan, taxation
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