verb (used with object)
Origin of quoin
Examples from the Web for quoins
But the most useful mortar, of course, had trunnions and adjustable elevation by means of quoins.Artillery Through the Ages|Albert Manucy
The Angles or Quoins of rubble-work are always carefully and precisely worked and serve as a gauge for the rest of the walling.
So also are the "trucks" or wheels, and the "quoins" or wedges for elevating or depressing the guns.The British Navy Book|Cyril Field
Frequently the quoins and jambs are executed in ashlar, which gives a neat and finished appearance and adds strength to the work.
Dressings, the finished stones of window and door jambs and quoins.
British Dictionary definitions for quoins
coign or coigne
Word Origin for quoin
Word Origin and History for quoins
1530s, "a cornerstone," variant spelling of coin (n.); in early use also in other senses of that word, including "a wedge."