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underpitch vault

American  
[uhn-der-pich] / ˈʌn dərˌpɪtʃ /

noun

  1. a construction having a central vault intersected by vaults of lower pitch.


underpitch vault British  
/ ˈʌndəˌpɪtʃ /

noun

  1. architect a vault that is intersected by one or more vaults of lower pitch

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of underpitch vault

under- + pitch 1