clinker Meaning, Definition & Usage

  1. noun a fragment of incombustible matter left after a wood or coal or charcoal fire
    cinder.
  2. noun a hard brick used as a paving stone
    clinker brick.
  3. verb clear out the cinders and clinker from
    • we clinkered the fire frequently
  4. verb turn to clinker or form clinker under excessive heat in burning

WordNet

Clink"er noun
Etymology
From clink; cf. D. clinker a brick which is so hard that it makes a sonorous sound, from clinken to clink. Cf. Clinkstone.
Definitions
  1. A mass composed of several bricks run together by the action of the fire in the kiln.
  2. 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.
  3. A scale of oxide of iron, formed in forging.
  4. A kind of brick. See Dutch klinker, under Dutch.

Webster 1913