noun

• (now rare) A cave or cavern.
• An underground vault, especially one beneath a church that is used as a burial place.
• (anatomy) A small pit or cavity in the surface of an organ or other structure.
• (botany) Any of the genus Cryptocoryne of aquatic plants of southern and southeastern Asia.
• (botany) Any of the genus Cryptopus of orchids of Madagascar and Mauritius.