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. - 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.

Noun

1.

crypt - a cellar or vault or underground burial chamber (especially beneath a church)

crypt - Unix command to perform encryption and decryption.

Easter sepulcher, alveolation, alveolus, ambry, antrum, apse, armpit, baptistery, barrow, basement, basin, beehive tomb, blindstory, bone house, booth, bowl, box, box grave, burial, burial chamber, burial mound, catacomb, catacombs, cave, cavern, cavity, cell, cellar, cellule, cenotaph, chamber, chancel, charnel house, choir, cist, cist grave, cloisters, compartment, concave, concavity, confessional, confessionary, crater, crib, cromlech, cup, deep six, depression, diaconicon, diaconicum, dip, dokhma, dolmen, enclosed space, fold, follicle, funnel chest, grave, grotto, hold, hole, hollow, hollow shell, house of death, lacuna, last home, long home, low green tent, low house, manger, mastaba, mausoleum, monstrance, mummy chamber, narrow house, nave, ossuarium, ossuary, passage grave, pew, pit, pocket, porch, presbytery, punch bowl, pyramid, reliquary, resting place, rood loft, rood stair, rood tower, room, sacrarium, sacristy, scoop, sepulcher, shaft grave, shell, shrine, sink, sinus, socket, stall, stupa, tomb, tope, tower of silence, transept, triforium, trough, tumulus, vault, vestry, vug