un·der·croft (ŭndər-krôft′, -krŏft′)
A crypt, especially one used for burial under a church.
[Middle English : under-, under- + croft, crypt (from Middle Dutch crofte, from Medieval Latin crupta, from Latin crypta, crypt; see CRYPT).]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.