1. Any condition that makes it difficult to make progress or to achieve an objective
   - barrier 
2. A barrier set up by police to stop traffic on a street or road in order to catch a fugitive or inspect traffic etc.
   - barricade

Derived forms: roadblocks

Type of: barrier, obstacle, obstruction

Encyclopedia: Roadblock

• drop keel
• drop like flies
• drop off
• drop one's serve
• drop open
• drop press
• drop scone
• drop shot
• drop the ball
• drop zone
• drop-dead
• drop-down menu
• drop-leaf
• drop-leaf table
• drop-off charge
• dropforge
• dropkick
• dropkicker
• droplet
• dropline
• dropout
• dropped egg
• dropper
• dropping
• dropping zone