The system or process of using gabions (wire baskets filled with stone or earth) in construction or fortification, or the gabions collectively.
From French gabionage, formed from gabion + French -age suffix (denoting a system, process, or collection). The -age suffix is productive in English for abstract nouns describing practices or collections.
Gabionage is a technical vocabulary word that shows how military engineering terminology becomes formalized—engineers and soldiers needed words for these newfangled stone-basket systems, and French and English both created -age nouns to talk about the practice systematically.
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