Synonyms to fortified tunnel

sap, abate, abri, approach trench, asshole, attenuate, axiom, babe, beverage, blood, blunt, boob, booby, bore, bunker, burrow, center, chump, cinch, communication trench, core, countermine, coupure, cramp, credulous person, cripple, cull, damp, dampen, deaden, debilitate, delve, dematerialize, deplete, destroy, devitalize, dig, dig out, dike, ding-a-ling, dingbat, dingdong, disable, disembody, distillate, distillation, ditch, double sap, drain, dredge, drill, drink, drive, dugout, dull, dupe, easy mark, easy pickings, elixir, enervate, enfeeble, entrenchment, essence, essential, etherealize, eviscerate, excavate, exhaust, extenuate, fabric, fall guy, fire trench, fish, flower, fluid, fluid extract, fluid mechanics, flying sap, focus, fool, fosse, foxhole, fundamental, furrow, gallery, galoot, gist, gobe-mouches, goof, gouge, gouge out, gravamen, greener, greenhorn, greeny, groove, grub, gruel, gudgeon, gull, heart, honeycomb, hydraulics, hydrogeology, hypostasis, inner essence, innocent, jerk, jerk-off, juice, kernel, klutz, knock out, latex, lay low, leadpipe cinch, liquid, liquid extract, liquor, lower, mark