noun, verb, -cad⋅ed, -cad⋅ing.| 1. | a defensive barrier hastily constructed, as in a street, to stop an enemy. |
| 2. | any barrier that obstructs passage. |
| 3. | to obstruct or block with a barricade: barricading the streets to prevent an attack. |
| 4. | to shut in and defend with or as if with a barricade: The rebels had barricaded themselves in the old city. |