Where does “bellan” come from?

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

Ancestry of “bellan”, step by step

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

bellan — Etymology, Origin & Word History | Etymology Explorer