aboideau
(noun)
noun
1. (Canada, Acadian) A tide gate, designed to protect marshland, so constructed as to let out water at low tide, but to prevent an influx of water at high tide.
(noun)
1. (Canada, Acadian) A tide gate, designed to protect marshland, so constructed as to let out water at low tide, but to prevent an influx of water at high tide.