noun
- coal from which most of the gases have been removed by heating: it burns with intense heat and little smoke, and is used as an industrial fuel
- a solid residue left after the distillation of petroleum or other liquid hydrocarbons
Origin:
< ME colke, core, charcoal (the unconsumed “core” of burned wood) < IE *gel-ĝ-, rounded < base *gel-: see claw
transitive verb, intransitive verb coked, coking
to change into coke