COKING
Verb
coking
present participle of coke
Noun
coking (uncountable)
The manufacture of coke via the destructive distillation of coal
Source: Wiktionary
COKE
Coke, n. Etym: [Perh. akin to cake, n.]
Definition: 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 [Written also
coak.] Gas coke, the coke formed in gas retorts, as distinguished
from that made in ovens.
Coke, v. t.
Definition: To convert into coke.
Source: Webster’s Unabridged Dictionary 1913 Edition