Keystone Meaning in English
word
Definition
A keystone is the central top stone in an arch that holds all the other stones in place. The word is also used to refer to something that is the most important part of a system or process.
Usage & Nuances
Literal use is architectural and somewhat technical; figuratively, 'keystone' is often used in formal, academic, or newswriting to refer to a key element or the most important part of something. Collocations: 'keystone species,' 'keystone habit.' Rarely used in casual speech.
Example Sentences
The keystone is in the center of the arch.
basic
Trust is the keystone of any good relationship.
basic
Removing the keystone makes the whole arch fall.
basic
Education is often called the keystone of society.
natural
That little town became a keystone in the national railroad network.
natural
If you take away that keystone habit, everything else falls apart.
natural