1. A buoy that makes a whistling noise
   - whistling buoy

Type of: acoustic buoy

• Sciurus griseus
• Sciurus hudsonicus
• Sciurus niger
• Sciurus vulgaris
• sclaff
• sclera
• scleral veins
• Scleranthus
• Scleranthus annuus
• scleredema
• sclerenchyma
• sclerite
• scleritis
• scleroderma
• Scleroderma aurantium
• Scleroderma bovista
• Scleroderma citrinum
• Scleroderma flavidium
• Sclerodermataceae
• Sclerodermatales
• sclerometer
• Scleropages
• Scleropages jardinii
• Scleropages leichardti
• Scleroparei