aboideau

aboideau

(ˈæbəˌdəʊ) or

aboiteau

(in the Canadian Maritimes) n, pl -deaus or -deaux, -teaus or -teaux
1. (Civil Engineering) a dyke with a sluicegate that allows flood water to drain but keeps the sea water out
2. (Civil Engineering) a sluicegate in a dyke
[Canadian French]