Word Study
undercroft
CIDE DICTIONARY
undercroft, n. [Under + Prov. E. croft a vault; cf. OD. krochte crypt, and E. crypt.].
A subterranean room of any kind; esp., one under a church (see Crypt), or one used as a chapel or for any sacred purpose. [1913 Webster]
OXFORD DICTIONARY
undercroft, n. a crypt.
Etymology
ME f. UNDER- + croft crypt f. MDu. crofte cave f. med.L crupta for L crypta: see CRYPT
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