"Clinker" is a word in ENGLISH

A clinker; a partially vitrified brick.

Partly burned or vitrified coal, or other combustible, in which fire is extinct.

The process of partly vitrifying pottery by exposing it to intense heat in a kiln.

A vitrified sand tube produced by the striking of lightning on sand; a lightning tube; also, the portion of rock …

Not admitting of being vitrified, or converted into glass.

A substance imperfectly vitrified.

Half or imperfectly vitrified; partially converted into glass.

The dross, or recrement, of a metal; also, vitrified cinders.

That may be vitrified; vitrifiable.

The act, art, or process of vitrifying; also, the state of being vitrified.

Capable of being vitrified, or converted into glass by heat and fusion; as, flint and alkalies are vitrifiable.

Vitrifiable.

To convert into glass; to vitrify.

Converted into glass.

of Vitrify

To become glass; to be converted into glass.

To convert into, or cause to resemble, glass or a glassy substance, by heat and fusion.

of Vitrify