The Austronesian Comparative Dictionary

*kapak beat the wings, flap the wings; sound of flapping

PMP kapak beat the wings, flap the wings; sound of flapping ⇫

WMP
Toba Batak hapak-hapak a clapper of bamboo used as a scarecrow
Ngaju Dayak kapak beating, flapping of wings
Mori moŋ-kapa-kapa to flap the wings
mo-kapa-kapa flap the wings
Sasak kapak beat the wings
CMP
Asilulu kapak sound of two slaps (or more)

POC kabak beat, flap the wings ⇫

OC
Nukuoro gaba to flap (as wings)
'Āre'āre apa wing
apa-a to flap the wings
Samoan ʔapa (of bird’s wing, turtle flipper, etc.) to beat, lash
Rarotongan kapa to flap, to flutter, as the wings of a bird; to palpitate, to move, as wings

POC kaba-kabak flap the wings repeatedly ⇫

OC
Sa'a apa-apa wing; shoulder
Anuta kapa-kapa to flap wings
Rennellese kapa-kapa flippers, as of turtle, stingray, whale; base of fish fins
Samoan ʔapa-ʔapa fin; wing of an aircraft
Niue kapa-kapa to flutter, to flap the wings (as a bird)
Tongan kapa-kapa side fin; to flap the wings
Rarotongan kapa-kapa to flap repeatedly, to flutter repeatedly, as the wings of birds
Maori ka-kapa to palpitate; to flutter, quiver
kapa-kapa wing