line of defence

Noun
  1. is a type of: organisation, organization - a group of people who work together
    same as: line of defense
  2. is a type of: defence, defense, defensive structure - a structure used to defend against attack
    subtypes: abatis, abattis - a line of defense consisting of a barrier of felled or live trees with branches (sharpened or with barbed wire entwined) pointed toward the enemy
    same as: line of defense

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