1. Of or belonging to the class Crustacea
   - crustacean 
2. Being or having or resembling a hard crust or shell

See also: crust, Crustacea

• waterweed
• waterwheel
• waterwheel plant
• waterworks
• waterworn
• watery
• watery-eyed
• WATS
• WATS line
• Watson
• watt
• watt second
• watt-hour
• wattage
• Watteau
• wattle
• wattle and daub
• wattmeter
• Watts
• Watusi
• Watutsi
• Waugh
• waul
• Wausau
• wave