barricade Synonyms

roadblock stop block off block up blockade block bar barricado redan redoubt revetment safeguard scarp seal secure septum shield siege spane stoccado obstruct ravelin occlude oppilative outwork padlock paling palisade obstruction parados parapet portcullis presidio obstructer railing rampart protect support barbed wire roadblocks lock out crenellation kibosh operoseness dam up stymy countermeasure picket fence defenses barriers