Mooring block

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

See also: Mooring

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
About the base of the monument, we will use it as mooring block,' he said.
It is almost certainly a mooring block for a barrage balloon as Councillor Cook suggests.
Becky Turner, landlady of the Horse and Jockey, contacted the Evening Telegraph about a possible balloon mooring block in the back yard of the pub - but its close proximity to the building tends to rule it out.
He revealed that winds gusting at about 50 mph had also broken the mooring blocks during the night.
The barge was to be used to place five-tonne mooring blocks for pleasure boats on Kielder Water in May 2008, but work was halted for several weeks until the birds reared their family.
The barge belongs to Northumbrian Water and was due to be used this week to place five-tonne mooring blocks for pleasure boats on Kielder Water.