a keystone

Architecture Arts 4 of 4 appearances
Practice Architecture

"a keystone" appearances by year

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All Architecture clues by year

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# Clue Answer As Given Value Round Category Air Date Show
As its name suggests, it's the central piece of an arch or a vault, holding the whole thing together a keystone $200 J ARCHITECTURE TERMS 2025-06-04 #53
Vital to holding up an arch is this block, top & center, that's placed last a keystone $600 J ARCHITECTURE 2020-02-18 #8162
The central stone of an arch that holds the rest in place, named for its importance the keystone $300 J ARCHITECTURE 1991-03-11 #1511
The central wedge-shaped piece in an arch which locks it together a keystone $600 DJ ARCHITECTURE 1987-04-03 #605
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