Related Clues:

• Try to prevent, as an investigation
• Cube
• Stand in the way
• Partner of tackle
• Child's building toy
• Be an obstacle to
• The 2x2 black square near the middle of this puzzle's grid, e.g., which is part of eight answers
• "Old" chip producer?
• Obstruct, impede
• Obstruct or hold back
• Obstruct, hold up
• Hamper, impede
• Keep back by delaying progress
• Delay progress, obstruct
• Obstruct, create obstacle