Possible Clues:

• Section of foot
• Arched part of foot
• The favoured way to cover the ground is on foot
• The foot must have it and the Foot must keep it
• When on foot in the army one must keep it
• Set pin in part of foot
• Might be high but isn't breaking the record
• Marching just under one foot
• Part of shoe
• In this the backward little dears go on foot