• A usually hollow concrete masonry unit or other building unit, such as glass block.
  • A solid, often squared, piece of timber or other material.
  • A piece of timber nailed between joists to stiffen a floor.
  • Any small piece of timber secured to the interior angle joint to strengthen and stiffen it.
  • A pulley and its enclosure.
  • A solid piece of timber or other material used to fill spaces between formwork members.
  • One of several small rectangular divisions within a city, bounded on each side by successive streets.

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