keystone
🇺🇸
/ˈkiːstəʊn/
🇬🇧
/ˈkiːstəʊn/
noun
R
The central stone at the top of an arch that keeps all the other stones in position.
The keystone was essential to the stability of the ancient bridge.
R
The most important part of a plan or argument that the other parts depend on.
For the team's success, good communication is the keystone.
translation
The central stone at the top of an arch that keeps all the other stones in position.; The most important part of a plan or argument that the other parts depend on.
Word Forms
Plural
keystones