Barriers or walls put up quickly to block a passage or protect against attack, or to use something as a barrier.
From French 'barricade,' derived from Spanish 'barrica' (barrel) because the French initially used barrels filled with earth and stones during the St. Bartholomew's Day Massacre (1572). The word entered English to describe any improvised defensive barrier.
The word 'barricade' literally comes from barrels—the French famously piled wine barrels into streets during riots, and this technique became so famous that any improvised street barrier got named after it!
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