IPA: //koʊˈkeɪn//
KK: /koʊˈkeɪn/
A powerful drug made from coca leaves that can numb parts of the body and is often used illegally for its pleasurable effects; it can be very addictive.
He was arrested for possession of cocaine, which is illegal in many countries.
Cocaine originates from the Spanish word 'cocaína', which is derived from 'coca' (the name of the plant Erythroxylum coca) and the suffix '-ina' (used in chemistry to denote substances). The word refers to the alkaloid derived from the coca plant.
Think of the coca plant as the source of cocaine, and remember that '-ina' indicates a chemical substance derived from it.