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fan vault

American  

noun

  1. a vault composed of a number of concave conoidal surfaces, usually four, springing from the corners of the vaulting compartment and touching or intersecting at the top, often decorated with ribs.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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