1 (architecture) the central stone at the top of an arch that keeps all the other stones in position
2 [usuallysing.] (written) the most important part of a plan or argument that the other parts depend on:
Changes to the welfare system are the keystone of the government's reforms.
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About this entry
This is a English–English dictionary entry.
Sourced from Main Dictionary in Lughet's collection.
This word also appears under other sources in Lughet's collection — see the list below.
This entry for keystone is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Is keystone a noun, verb, or something else?
In this entry, keystone is tagged as noun.
Does keystone appear elsewhere on Lughet?
Yes — keystone appears under other sources or language pairs in Lughet's collection. See the list below.
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.
