Her sill on

Chandler's Encyclopedia · 1898 · p. 23

Plank or beam 12 ft. long driven full of spikes or nails to incommode the march of infantry or cavalry.

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)
The Century Dictionary: The Encyelopedic Lexicon of the English Language (1887)
A Military Dictionary and Gazetteer (1881)
Dictionary of Science, Literature and Art (1854)
Dictionary of Science, Literature and Art (1842)
A Military Dictionary (1810)

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