coke 1 
(kōk)
(kōk)n.
The solid residue of impure carbon obtained from bituminous coal and other carbonaceous materials after removal of volatile material by destructive distillation. It is used as a fuel and in making steel.
tr. & intr.v. coked, cok·ing, cokes
To convert or be converted into coke.
[Perhaps from Middle English colk, core.]
- heart block
- heartbreak
- heartbreaker
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- heartbroken
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- heartburn
- heart disease
- hearten
- heart failure
- heartfelt
- hearth
- heart-healthy
- hear things
- hearth money
- hearthrug
- hearthstone
- heartily
- heartiness
- heartland
- heartless
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- heart-lung machine