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Definition of Line of defense
1. Noun. Any organization whose responsibility it is to defend against something. "Police are the major line of defense against crime"
2. Noun. Defensive structure consisting of a barrier that can be employed for defense against attack.
Exact synonyms: Line Of Defence
Specialized synonyms: Abatis, Abattis
Generic synonyms: Defence, Defense, Defensive Structure
Specialized synonyms: Abatis, Abattis
Generic synonyms: Defence, Defense, Defensive Structure