D defs.my
Entry 2 senses Webster, 1913

Crypt

/(krĭpt)/ · IPA /kɹɪpt/
01 n. A vault wholly or partly under ground; especially, a vault under a church, whether used for burial purposes or for a subterranean chapel or…
  1. 1.
    A vault wholly or partly under ground; especially, a vault under a church, whether used for burial purposes or for a subterranean chapel or oratory.
    “Priesthood works out its task age after age, . . . treasuring in convents and crypts the few fossils of antique learning.” Motley.
    “My knees are bowed in crypt and shrine.” Tennyson.
  2. 2.
    A simple gland, glandular cavity, or tube; a follicle; as, the crypts of Lieberkühn, the simple tubular glands of the small intestines.(Anat.)