Definition of "cocaine"

cocaine

/kə(ʊ)ˈkeɪn/

noun
countable and uncountable, plural cocaines
1. (uncountable, pharmacology) An addictive drug derived from coca (Erythroxylum) or prepared synthetically, used sometimes medicinally as a local anesthetic and, often illegally, as a stimulant.
  Quotations
  Holmes, who loathed every form of society with his whole Bohemian soul, remained in our lodgings in Baker-street, buried among his old books, and alternating from week to week between cocaine and ambition, the drowsiness of the drug, and the fierce energy of his own keen nature.
  1891 June 25, A[rthur] Conan Doyle, “Adventures of Sherlock Holmes. Adventure I.—A Scandal in Bohemia.”, in Geo[rge] Newnes, editor, The Strand Magazine: An Illustrated Monthly, volume II, London: George Newnes, Limited, […], published July 1891
  All I get, uh, is this cup of cold coffee and cocaine / And your ugly face, look out
  1983, “Cold Coffee & Cocaine”, performed by Prince
  Cocaine’s awfully expensive stuff, isn't it? Is it worth it?
  1990, Andrew Davies, Michael Dobbs, House of Cards, season 1, episode 1, spoken by Frank Urquhart (Ian Richardson)
2. (countable) Any derivative of cocaine.