noun un·der·croft \ˈən-dər-ˌkrȯft\

Definition of undercroft

  1. :  a subterranean room; especially :  a vaulted chamber under a church

Origin and Etymology of undercroft

Middle English, from under + crofte crypt, from Middle Dutch, from Medieval Latin crupta, from Latin crypta — more at crypt

First Known Use: 14th century

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