1. Filter consisting of a layer of sand or gravel for filtering water

Derived forms: filter beds

Type of: filter

• tube wrench
• tube-nosed
• tube-nosed bat
• tube-nosed fruit bat
• tube-shaped
• tube-shaped structure
• tubectomy
• tubed
• tubeless
• tubeless tire
• tubeless tyre
• tubelike
• tuber
• tuber root
• Tuberaceae
• Tuberales
• tubercle
• tubercle bacillus
• tubercular
• Tubercularia
• Tuberculariaceae
• tuberculate
• tuberculin
• tuberculin skin test
• tuberculin test