barrier Synonyms - page 2

padlock outwork opposition preventative preventive restraint resistance remora redoubt redan ravelin rampart rail quickset quarantine protection problem occlusion threshold mol countermeasure chimneypiece glitch dead weight hiccup clampdown light-tight marchland property line lychgate lichgate infarct millpond slideway obstacles limits snarl up rearguard picket fence party wall hurdles guardrail fly in the ointment choke point checkpoint water-repellent bottleneck cecum blind gut encirclement