C2 noun /ˈtʌtʃ.stoʊn/
Touchstone
критерий; эталон
Meaning
a standard or criterion by which something is judged or recognized; a test of genuineness
Example
His honesty became the touchstone by which all other employees were measured.
Его честность стала критерием, по которому измерялись все остальные сотрудники.