1. Having three sides
   - trilateral, triangular

See also: many-sided, multilateral

• sunglass
• sunglasses
• sunhat
• sunk
• sunk fence
• sunken
• sunken arch
• sunken garden
• sunken-eyed
• sunlamp
• sunless
• sunlight
• sunlit
• sunlounger
• Sunna
• Sunnah
• Sunni
• Sunni Islam
• Sunni Muslim
• sunnies
• sunnily
• sunniness
• Sunnite
• sunny
• sunny-side up