Where does “*kannā” come from?

*kannā (Proto-Germanic) comes from Proto-Germanic kannǭ, from Proto-Indo-European gandʰ- — vessel, tub; a vessel; container, vessel.

Ancestry of “*kannā”, step by step

Step	Language	Word	Meaning
1	Proto-Germanic	kannǭ	a tankard, mug, cup, can; a jug, pitcher, pot
2	Proto-Indo-European	gandʰ-	vessel, tub; a vessel; container, vessel

*kannā — Etymology, Origin & Word History | Etymology Explorer