Related Clues:

• Shoe sole curve
• Marching with the group
• Stocking part, e.g.
• Marching to the beat
• Like a marching band
• Top of the foot
• Keeping up, as with the times
• It's arched
• Synchronously
• Conforming
• Marching synchronously
• Marching smartly
• Arched foot part
• Marching well
• Arched part