abertura de llenado y vaciado
/ˌaβeɾtˈuɾa ðe ʎenˈaðo i βaθjˈaðo/
n
English: lock filling and emptying opening · 船闸充泄水孔
English · lock filling and emptying opening中文 · 船闸充泄水孔Français · pertuis de remplissage et de vidange
Significado：Holes through which the water flows in to fill the lock-chamber or out to empty it.