Crypt /(krĭpt)/

Crypt

n.
  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.
    My knees are bowed in crypt and shrine.
  2. A simple gland, glandular cavity, or tube; a follicle; as, the crypts of Lieberkühn, the simple tubular glands of the small intestines. (Anat.)