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Keystone

/ˈkiː.stəʊn/

The top stone of an arch.

Full Dictionary Entry

📖 Definitions of "Keystone"

noun

1
The top stone of an arch.
2
Something on which other things depend for support.
3
A native or resident of the American state of Pennsylvania.
4
(retail) A retail price that is double the cost price; a markup of 100%.

verb

1
To distort (an image) by projecting it onto a surface at an angle, which for example causes a square to look like a trapezoid.
2
(retail) To double the cost price in order to determine the retail price; to apply a markup of 100%.

🔄 Synonyms of "Keystone"

1 synonyms found via WordNet and Google Books.

Word	Definition
headstonenoun	A gravestone, a grave marker: a monument traditionally made of stone placed at the head of a grave.

💡 Words with a Similar Meaning to "Keystone"

Found via reverse dictionary — words that share a conceptual meaning.

Word	Definition
headstonenoun	A gravestone, a grave marker: a monument traditionally made of stone placed at the head of a grave.
vaultnoun	An arched masonry structure supporting and forming a ceiling, whether freestanding or forming part of a larger building.
pillarnoun	(architecture) A large post, often used as supporting architecture.
cornerstonenoun	(figuratively) That which is prominent, fundamental, noteworthy, or central.
basementnoun	(architecture) A floor of a building below ground level.
centrepiecenoun	An ornament to be placed in the centre, as of a table, ceiling, etc.
keynoun	(countable) An object designed to open and close a lock.
fulcrumnoun	(mechanics) The support about which a lever pivots.
pivotnoun	(figuratively, by extension) Something or someone having a paramount significance in a certain situation.
linchpinnoun	(figuratively) A central cohesive source of stability and security; a person or thing that is critical to a system or organisation.
lynchpinnoun	Alternative form of linchpin. [A pin inserted through holes at the end of an axle or shaft, so as to secure a wheel or shaft-mounted device.]
touchstonenoun	(figurative, by extension) A standard of comparison or evaluation.
milestonenoun	(idiomatic) An important event in a person's life or career, in the history of a nation, in the life of some project, etc.
bedrocknoun	(figurative) A basis or foundation.
angularnoun	(anatomy) A bone in the base of the lower jaw of many birds, reptiles, and fishes.
centerpiecenoun	US standard spelling of centrepiece. [An ornament to be placed in the centre, as of a table, ceiling, etc.]
geometric	Of or relating to geometry.
basenoun	Something from which other things extend; a foundation.
groundworknoun	The foundation; the basic or fundamental parts that support or allow for the rest.
basisnoun	A starting point, base or foundation for an argument or hypothesis.