Crypt (krĭpt), n. [L. crypta vault, crypt, Gr. κρύπτη, fr. κρύπτειν to hide. See Grot, Grotto.] 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. (Anat.) A simple gland, glandular cavity, or tube; a follicle; as, the crypts of Lieberkühn, the simple tubular glands of the small intestines.