Where does “bellen” come from?

bellen (Middle Dutch) comes from Old Dutch bellan, from Proto-Germanic bellaną, from Proto-Indo-European bʰel-, from Proto-Indo-European bʰōl-.

Ancestry of “bellen”, step by step

Step	Language	Word	Meaning
1	Old Dutch	bellan	—
2	Proto-Germanic	bellaną	to roar, bark, bellow; to ring
3	Proto-Indo-European	bʰel-	to sound; to speak, roar, bark; shiny, white; to...
4	Proto-Indo-European	bʰōl-	—

bellen — Etymology, Origin & Word History | Etymology Explorer