breeze-block

Etymology
From breeze meaning residue from a furnace.

Noun

 * 1)  A lightweight building block made from cinders and concrete.

Translations

 * Esperanto: betonbloko
 * Finnish: rakennusharkko,
 * French: ,
 * German: Schalstein
 * Korean: 콘크리트 블록
 * Russian: шлакобето́нный блок,
 * Welsh: brisbloc