In anatomy, variously a blind alley, a tube with no exit, a depression, or a pit in an otherwise fairly flat surface. For example, the tonsillar crypts are little pitlike depressions in the tonsils.

early 15c., "grotto, cavern," from Latin crypta "vault, cavern," from Greek krypte (short for krypte kamara "hidden vault"), fem. of kryptos "hidden," verbal ad [..]

means a space in a mausoleum used or intended to be used for the entombment of human remains.

Dictionary of PHP Functions (PHP 3, PHP 4 )crypt -- One-way string encryption (hashing)string crypt ( string str [, string salt])More Info

A vault or room used for keeping remains. COT

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

underground chamber beneath the altar in a church, usually containing a saint's relics. Though the chamber is underneath the choir, it can extend as far as the crossing. It is not always complete [..]

"Crypt" or "vault" means a space in a mausoleum of sufficient size used, or intended to be used, to entomb uncremated human remains.

Underground chamber or vault, usually beneath the presbytery of a church and used for burial or sometimes as an oratory.

A small underground chamber that might be constructed, as a part of a chapel or monastery

The area under Chapel.