Laxi Dictionary

English Dictionary

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Definition keystone in British English

keystone noun

[countable] noun
/ˈkiːˌstəʊn/
1

something that is very important to a plan, arrangement, or set of beliefs

Synonyms and related words
feature priority element
2

a stone at the top of an arch that keeps the structure together

Synonyms and related words
frames foundation support
Definition keystone in British English