ონლაინ ლექსიკონი

Back

touchstone

გამოთქმა: /ˈtʌtʃstəʊn/

არსებითი სახელი

Universal
  • a piece of fine-grained dark schist or jasper formerly used for testing alloys of gold by observing the colour of the mark which they made on it.
  • a standard or criterion by which something is judged or recognized:they tend to regard grammar as the touchstone of all language performance

სინონიმები