Her sill on
A Military Dictionary and Gazetteer · 1881 · p. 8
A strong beam, whose sides are stuck full of spikes, which is thrown acro the breach made by an enemy to render it impa able.
Bu kavram başka kaynaklarda da geçiyor
French-English Dictionary of Military Terms (1918)
The American Dictionary and Cyclopedia (1910)
The American Dictionary and Cyclopedia (1910)
Chandler's Encyclopedia (1898)
A Military Dictionary (1810)
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