noun: Initialism of companion of honour, a British honour and postnomial abbreviation.
noun: Abbreviation of heavy cruiser. [(nautical) A type of cruiser, characterised by its heavy armament.]
noun: (US, army, aviation) Initialism of cargo helicopter.
noun: (set theory) Initialism of continuum hypothesis. [(set theory) The hypothesis which states that any infinite subset of ℝ must have the cardinality of either the set of natural numbers or of ℝ itself.]
noun: (medicine) Initialism of cluster headache. [(pathology) An extremely painful, cyclical and unilateral headache.]
noun: Initialism of central heating. [Any of various heating systems in which a central source of heat is used to distribute heat (and sometimes hot water) throughout a building in a controlled manner.]
noun: Initialism of Cretan Hieroglyphic.
noun: Abbreviation of chain - a unit of measurement equal to 22 yards [A series of interconnected rings or links usually made of metal.]
noun: (Japan) Abbreviation of channel [The physical confine of a river or slough, consisting of a bed and banks.]
