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Definition of Flap gate
1. Noun. A device that allows water to flow in one direction only through a culvert; it is used especially to drain surface water from coastal marshes at low tide ¹
¹ Source: wiktionary.com
Medical Definition of Flap gate
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1. Noun. A device that allows water to flow in one direction only through a culvert; it is used especially to drain surface water from coastal marshes at low tide ¹
¹ Source: wiktionary.com
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