Where does “bussus” come from?

bussus (Proto-Celtic) comes from Proto-Indo-European bʰew- — to grow, swell; to swell, wax, grow; to blow; to...

Ancestry of “bussus”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	bʰew-	to grow, swell; to swell, wax, grow; to blow; to...

bussus — Etymology, Origin & Word History | Etymology Explorer