1. A toroidal shape
   - ring, halo, annulus, doughnut

Type of: toroid

• marsh orchid
• marsh pea
• marsh pink
• marsh plant
• marsh rosemary
• marsh St-John's wort
• marsh tea
• marsh trefoil
• marsh wren
• marshal
• Marshal Saxe
• Marshal Tito
• marshall
• Marshall Islands
• Marshall McLuhan
• Marshall Plan
• marshalling yard
• Marshals
• marshalship
• marshland
• marshmallow
• marshmallow fluff
• marshy
• Marsilea
• Marsilea drummondii