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

Type of: toroid

• watercolourist
• watercourse
• watercraft
• watercress
• waterdog
• watered
• watered stock
• watered-silk
• waterer
• waterfall
• waterfinder
• Waterford
• waterfowl
• waterfront
• Watergate scandal
• Waterhouse-Friderichsen syndrome
• wateriness
• watering
• watering can
• watering cart
• watering hole
• watering place
• watering pot
• waterish
• waterleaf