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 solid with triangular lateral faces and a polygonal (often square or rectangular) base.
A medullary pyramid, the medial-most bumps on the ventral side of the medulla oblongata
A pyramid scheme.
The triangular layout of cards in the game of Pyramid.
An ancient massive construction with a square or rectangular base and four triangular sides meeting in an apex, such as those built as tombs in Egypt or as bases for temples in Mesoamerica.
An approximately triangular headline consisting of several centered lines of text of increasing length.
A construction in the shape of a pyramid, usually with a square or rectangular base.
To employ, or take part in, a pyramid scheme.
To combine (a series of genes) into a single genotype.
To engage in pyramid trading.
To build up or be arranged in the form of a pyramid.