Keystone

Meaning

Noun

●

In Architecture:

The

of an arch.

●

Something on which other things

for support.

●

In Demonyms for Americans:

A

or

of the American state of Pennsylvania.

●

A

that is double the

; a

of 100%.

●

In Baseball:

The

of the

and second baseman.

Verb

●

To

(an

) by

it onto a

at an

, which

a

to

a trapezoid.

●

To double the

in order to

the

; to

a

of 100%.

Name

●

A

census-designated place

in Colorado.

●

A

and

in Iowa.

●

A

in North Dakota.

●

A

in South Dakota.

Sourced from

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