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 small opening or orifice, as in a body organ or passage.
Any of the small openings or pores in a sponge.
The mouth of a river.