1. An instep flattened so the entire sole rests on the ground
   - sunken arch

Derived forms: fallen arches

Type of: instep

• open-plan
• open-source
• openbill
• opencast
• opencast mining
• opencut
• opened
• opener
• openhanded
• openhandedness
• openhearted
• opening
• opening line
• opening move
• opening night
• openly
• openmouthed
• openness
• openside plane
• openwork
• opepe
• opera
• opera buffa
• opera cloak
• opera comique