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KEYSTONE
\kˈiːstə͡ʊn], \kˈiːstəʊn], \k_ˈiː_s_t_əʊ_n]\
Definitions of KEYSTONE
1899 - The american dictionary of the english language.
1894 - The Clarendon dictionary
1919 - The Concise Standard Dictionary of the English Language
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The
same
as
KEY
,
in
arch
.
1899
- The american dictionary of the english language.
By Daniel Lyons
Middle
stone
of
an
arch
.
1894
- The Clarendon dictionary
By William Hand Browne, Samuel Stehman Haldeman
The
uppermost
and
completing
stone
of
an
arch
.
1919
- The Concise Standard Dictionary of the English Language
By James Champlin Fernald
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