Related Clues:

• Sidling
• Siding
• Rim,border
• Rim or slight advantage
• Margin, fringe
• Advancing sideways
• Boundary, rim
• Margin, rim
• Border, rim
• Bordering, fringing
• Rim or sharp side of knife
• Border or cutting side of knife
• Cutting side as of knife, or margin
• Sharpened side of a blade
• Advancing slowly on the fringing?