The Austronesian Comparative Dictionary

*wáqwaq mouth of a river

PPh wáqwaq mouth of a river

WMP
Kankanaey wáwa bank, margin (of a river, etc.)
Kapampangan wawaʔ the mouth of a river, confluence
Tagalog wáwaʔ mouth of a river, delta
Aklanon wawáʔ mouth of a river
Cebuano wáʔwaʔ straits between two bodies of land