Cyanide
WordNet
noun
(1) An extremely poisonous salt of hydrocyanic acid
(2) Any of a class of organic compounds containing the cyano radical -CN
WiktionaryText
Noun
- Any compound containing the -C≡N radical or the C≡N-1 anion.
- potassium cyanide - a water soluble poison
- hydrogen cyanide, or cyanide gas - a poisonous gas