前ぜん哨しょう線せんMeanings1nounscouting line; outpost lineMilitary term for a line of forward positions used for reconnaissance or early warning. Not an everyday word.敵てきの前ぜん哨しょう線せんを突とっ破ぱする作さく戦せんが立たてられた。A plan was made to break through the enemy's scouting line.