clinker > define

noun

• A fragment of incombustible matter left after a wood or coal or charcoal fire.
  • synonyms: cinder
• A hard brick used as a paving stone.
  • synonyms: clinker brick

verb

• Clear out the cinders and clinker from.
  • usage: "we clinkered the fire frequently"
• Turn to clinker or form clinker under excessive heat in burning. .

• (n.) Scoria or vitrified incombustible matter, formed in a grate or furnace where anthracite coal in used; vitrified or burnt matter ejected from a volcano; slag.
• (n.) A kind of brick. See Dutch clinker, under Dutch.
• (n.) A mass composed of several bricks run together by the action of the fire in the kiln.
• (n.) A scale of oxide of iron, formed in forging.