Trench - Vine's Expository Dictionary of New Testament Words
Trench[ 1,,G5482, charax ]
primarily a pointed stake," hence, "a palisade or rampart," is rendered "trench" in Luke 19:43, AV (RV, "bank," marg., "palisade"). In A.D. 70, Titus, the Roman general, surrounded Jerusalem with a palisaded mound (Tyndale, l.c., renders it "mound"). The Jews in one of their sorties destroyed this charax, after which Titus surrounded the city with a wall of masonry.