Definitions
from The Century Dictionary.
- noun In gunnery, one of the strong plates of iron or brass which are fitted over the trunnions of a gun and secure it on the carriage. See cut under
gun-carriage .
from the GNU version of the Collaborative International Dictionary of English.
- noun (Gun.) A metal covering plate which passes over the trunnions of a cannon, and holds it in place.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A
metal plate that covers thetrunnions of acannon and holds it in place.
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
cap + square
Support

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Examples
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Doubtless Bampfylde's fire had weakened the capsquare and now the twelve-pounder was as good as useless.
Sharpe's Siege Cornwell, Bernard 1987
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Its capsquare was broken, but the barrel was charged with the last of the garrison's dry powder and rammed with metal scraps, stone fragments, and rusty nails.
Sharpe's Siege Cornwell, Bernard 1987
Comments
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