- block ► NOUN 1) a large solid piece of material with flat surfaces on each side. 2) chiefly Brit. a large single building subdivided into separate flats or offices. 3) a group of buildings bounded by four streets. 4) a large quantity of things regarded as a unit. 5) an obstacle to progress. 6) a solid area of colour on a surface. 7) (also cylinder block or engine block) a large metal moulding containing the cylinders of an internal-combustion engine. 8) a pulley or system of pulleys mounted in a case.► VERB 1) prevent movement or flow in. 2) impede or prevent (an action or movement). 3) (block out/in) mark out (an outline) or shade in roughly.● knock someone's block off — Cf. ↑knock someone's block off● put one's head (or neck) on the block — Cf. ↑put one's neck on the blockDERIVATIVES blocker noun blocky adjective.ORIGIN Dutch.
English terms dictionary. 2015.