1) Agricultural terminology
Found on
https://www.crosswordclues.com/clue/aboiteau
Aboiteau farming on reclaimed marshland is a labor-intensive method in which earthen dykes are constructed to stop high tides from inundating marshland. A wooden sluice or aboiteau (plural aboiteaux) is then built into the dyke, with a hinged door (clapper valve) that swings open at low tide to allow fresh water to drain from the farmland but swin...
Found on
http://en.wikipedia.org/wiki/Aboiteau
No exact match found.
