COKE

Coke (?), n. [[Perh. akin to cake, n.]] Mineral coal charred, or depriver of its bitumen, sulphur, or other volatile matter by roasting in a kiln or oven, or by distillation, as in gas works. It is lagerly used where � smokeless fire is required. [Written also coak.] Gas coke, the coke formed in gas retorts, as distinguished from that made in ovens.