Meaning

noun carbon fuel produced by distillation of coal

noun Coca Cola is a trademarked cola

noun street names for cocaine

originThe origin is not certain. The OED says it is first attested in 1669. The MED has an earlier attestation in the related sense of "charcoal" in 1430: Middle English coke. This may be the same word as colk (“core”) (perhaps from the notion that coke is the core of the material left after it burning), from Old English *colc (“hole, well”), from Proto-West Germanic *kolk, from Proto-Germanic *kulukaz…

Etymology from Wiktionary, CC BY-SA 3.0