custom house(official building, in a port, where customs are collected and shipping is cleared for entry and exit) noun [UK: ˈkʌ.stəm ˈhaʊs] [US: ˈkʌ.stəm ˈhaʊs]
customs(the duties or taxes imposed on imported or exported goods) noun [UK: ˈkʌ.stəmz] [US: ˈkʌ.stəmz]