pertuis de remplissage et de vidange
/pɛʁtyˈi də- ʁɑ̃plisˈaʒ e də- vidˈɑ̃ʒ/
n
English: lock filling and emptying opening · 船闸充泄水孔
Sens：Holes through which the water flows in to fill the lock-chamber or out to empty it.
English: lock filling and emptying opening · 船闸充泄水孔