1) Abattis 2) Barbed-wire obstacle 3) Barricade 4) Barricade of sharpened trees 5) Barricade of trees 6) Defensive barricade 7) Defensive barrier 8) Defensive device 9) Defensive obstacle 10) French word used in English 11) Line of defence 12) Line of defense 13) Type of Fortification 
Abatis, abattis, or abbattis is a term in field fortification for an obstacle formed (in the modern era) of the branches of trees laid in a row, with the sharpened tops directed outwards, towards the enemy. The trees are usually interlaced or tied with wire. Abatis are used alone or in combination with wire entanglements and other obstacles.{sfn|A...
rampart of felled trees and branches
• (n.) Alt. of Abattis
Giblets
Barricade of logs.
An abatis (or abattis) is a barricade or obstacle comprised of felled trees arranged with the branches pointing outwards towards the enemy. The term is also in modern times applied to a barbed-wire entanglement placed before a defensive position.
an obstacle or barricade of trees with bent or sharpened branches directed toward an enemy. · a barbed wire entanglement used as an obstacle or barricade against an enemy.