A small pit or cavity in the surface of an organ or other structure.
Any of the genus Cryptopus of orchids of Madagascar and Mauritius.
Any of the genus Cryptocoryne of aquatic plants of southern and southeastern Asia.
An underground vault, especially one beneath a church that is used as a burial place.
A pen, a hard internal bodypart of certain cephalopods, made of chitin-like material.
A Roman sword roughly two feet long.