The Austronesian Comparative Dictionary

*ruqag wide, spacious

PWMP ruqag wide, spacious

WMP
Tagalog luwág spaciousness; looseness
Cebuano luag loose, not tightly attached or wound around; having ample space
Toba Batak ruak wide, spacious
Karo Batak ruhak spacious, wide, of an opening
Malay ruak spread out, expand, gape open. Of the hood of a cobra, the contents of an egg when the shell is broken, etc.
Banjarese ruhak widen, enlarge