What is "mooring block"

Mooring \Moor"ing\, n.

1. The act of confining a ship to a particular place, by means of anchors or fastenings.

2. That which serves to confine a ship to a place, as anchors, cables, bridles, etc.

3. pl. The place or condition of a ship thus confined.

   And the tossed bark in moorings swings.
   --Moore.

   Mooring block (Naut.), a heavy block of cast iron sometimes used as an anchor for mooring vessels.