Related Clues:

• Expand, as one's horizons
• Dilate
• Open up
• Widen, as a pupil
• Broaden, as a pupil
• Improve, as a highway
• Modernize, as a highway
• What pupils do in the dark
• Add more lanes to
• Expand laterally
• Prepare pupils for an exam?
• Become wider, as pupils
• Enlarge, as a road
• Ream out
• Expand in detail