transitive. To fortify, strengthen (a wall, rampart, etc.); to block up, barricade (a gate or door). Also figurative.

= barricade, v.

To fortify or defend (a place) with or as with barricades. Also figurative.

To shut in or defend with or as with a barricade. literal and figurative.

transitive. spec. To fortify (a defensive work) by constructing barriers or barricades across an approach, the line of fire, etc.; to provide…