(optics) A uniaxial crystal, such as one of calcite, in which the extraordinary wave travels faster than the ordinary wave / A crystal that contains a cavity

(mineralogy) A mineral crystal whose interior space is empty

plural of crystal dick

(uncountable, idiomatic, slang) Erectile dysfunction caused by methamphetamine use or other drug use.

While crying; with tears. / (figuratively) In a way that desperately demands attention.

(now historical) Crystal; a piece of crystal.

(pathology, especially in plural) Elongated, double-pyramidal crystal of eosinophils found in the sputum in bronchial asthma

(crystallography) Any of the seven distinct symmetry classifications of crystals: cubic, tetragonal, hexagonal, orthorhombic, monoclinic, triclinic and trigonal.

plural of cryer

Archaic form of crier.