noun
Definition: A type of solid carbon material that is produced from coal or other carbon-rich substances through a heating process. It is often used as a fuel or in industrial processes like steelmaking.
Example: The factory uses coke as a key ingredient in the production of steel.
transitive verb
Definition: To convert a substance, especially coal, into coke, which is a fuel used in metal production.
Example: The factory will coke the coal to produce the necessary fuel for the furnace.