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Definitions

quoin

[koin, kwoin] / kɔɪn, kwɔɪn /
NOUN
keystone
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

They were used to move the carriage and to lift the breech of the gun so that the elevating quoin or screw might be adjusted.

From Artillery Through the Ages A Short Illustrated History of Cannon, Emphasizing Types Used in America by Manucy, Albert

Porter's quoin is adopted for all carriages requiring quoins.

From Ordnance Instructions for the United States Navy. 1866. Fourth edition. by United States. Navy Dept. Bureau of Ordnance

As soon as the quoin is free, the 2d Captain takes hold of it with both hands and withdraws the quoin to the full extent; handspikemen "raise" or "lower" the gun slowly and steadily.

From Ordnance Instructions for the United States Navy. 1866. Fourth edition. by United States. Navy Dept. Bureau of Ordnance

Back's Inlet presents on each side a succession of lofty precipitous headlands, which have the shape termed, by seamen, "the gunner's quoin."

From Narrative of a Second Expedition to the Shores of the Polar Sea by Franklin, John

So that below the girdle, we find twenty-five facets: 8 cross, 8 skill, 4 pavilion, 4 quoin, and 1 collet.

From The Chemistry, Properties and Tests of Precious Stones by Mastin, John