The Austronesian Comparative Dictionary

*bu(ŋ)kul lumpy, having lumps or bumps

PWMP bu(ŋ)kul lumpy, having lumps or bumps

WMP
Ilokano bukól-an to cause to swell or form a hump (by hitting, etc.)
búkol hump; swelling; any projecting bone (wrist bone)
b<um>úkol to start forming (of a hump or swelling)
Banggai buŋkul-an a lump or bump
buŋkul lumpy, having lumps or bumps
Bikol mag-búkol to swell, rise (of a bump)
búkol bump, lump (referring only to that on the body or head)
ma-bukúl-an to get a bump or lump