A cyanide is a chemical compound that contains the cyano group, -C≡N, which consists of a carbon atom triple-bonded to a nitrogen atom. Cyanides most commonly refer to salts of the anion CN−, which is isoelectronic with carbon monoxide and with molecular nitrogen. Most cyanides are highly toxic.
Read more about Cyanide: Nomenclature and Etymology, Occurrence and Reactions, Manufacture, Toxicity